My Ham Radio Antenna Is Failing, Lets Replace It!

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  • เผยแพร่เมื่อ 9 ก.ย. 2024
  • Follow me on my weekend where a bunch of my stuff BROKE! My Focusrite Scarlet 4i4 required for the live stream died along with the 70cm band on my roof antenna. Time to replace it all!
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ความคิดเห็น • 271

  • @toddhowell2299
    @toddhowell2299 หลายเดือนก่อน +25

    Pro Tip: When you use the TDR like that, run it from both ends and make sure it matches. That way you know you don't have a discontinuity near the other connector.

    • @HamRadioCrashCourse
      @HamRadioCrashCourse  หลายเดือนก่อน +5

      Ohhh. Yes. I forgot that!

    • @garycook5125
      @garycook5125 หลายเดือนก่อน

      "discontinuity"?
      You mean "open"?

    • @toddhowell2299
      @toddhowell2299 หลายเดือนก่อน +2

      @@garycook5125 Open or just higher impedance that might look fine at DC. Say you have a 30' piece of coax and the TDR says 29.75', you might think it's fine. Measure from the other end and if it says 29.75' then it is fine, but if it says 0.25' you know something's wrong.

    • @digitalradiohacker
      @digitalradiohacker หลายเดือนก่อน

      Another diagnostic, unplug the coax from the antenna and insert a dummy load instead.
      Back to the shack, normal SWR / RL measurement. You should get a good SWR from 1 to 1000MHz with a good 50ohm load on the coax because you don't have a frequency dependant load (antenna) there anymore.
      All good? It's not the coax, it's the antenna.

  • @WillW7WRP
    @WillW7WRP หลายเดือนก่อน +45

    Always be safe when you go on the roof. If it has too much "slope", better play it safe and get a professional. Oh, I would not recommend the Secret Service.

    • @digitalradiohacker
      @digitalradiohacker หลายเดือนก่อน

      If the roof is too sloped, look on Craigslist for a teenager with experience at Blackrock - I've heard good things about their ability to deal with sloped roof designs.

    • @adcraziness1501
      @adcraziness1501 หลายเดือนก่อน +1

      One time I had to climb a roof that was three degrees steeper than straight up.

    • @inthefar-queue6270
      @inthefar-queue6270 หลายเดือนก่อน +1

      🤣🤣🤣

  • @garycook5125
    @garycook5125 หลายเดือนก่อน +15

    When wrapping your connections @18:06, always start the wrap below the connection, and work your way up. Do not start wrapping from above the connection. If wrapped from the bottom- up, the wrap overlaps itself like roof shingles do, encouraging water to flow over the wraps instead of in between them. Some people never figure out how water gets in their coax; this is normally what they did wrong.

  • @mariodesmo
    @mariodesmo หลายเดือนก่อน +12

    I installed a tri-band (23cm/70cm/2m) antenna from Diamond that is mechanically identical to your antenna (from what I can see in the video), and it's worked very well for more than 20+ years. I took it down when I moved last year and inspected it. Everything was as perfect. I did a quick cleaning on it and painted it white again since I could just barely see fiberglass underneath the original paint in some areas. I reassembled it, put it back together and it's back up again. Works like a charm. I think the build quality of the Comet/Diamond antennas is top notch. Good Luck!

  • @3henry214
    @3henry214 หลายเดือนก่อน +8

    LOL... Guitar Center "the place you go to lust after stuff that you won't buy"... almost the same can be said for HRO!

  • @Malloc42
    @Malloc42 หลายเดือนก่อน +11

    Ha, you threw me for a loop. Early on I was like "oh no and you had engine trouble too?" (your front "engine" hood was open). "Ohhhh, it's electric." Silly me.

    • @nicklang1660
      @nicklang1660 หลายเดือนก่อน +1

      I totally did the same thing

    • @heiser_bill
      @heiser_bill หลายเดือนก่อน

      yeah, me too! :-)

  • @MaryBrownForFreedom
    @MaryBrownForFreedom หลายเดือนก่อน +8

    Fiberglass gel coat coming off, and maybe fiberglass splinters... you can rough it up with sandpaper and paint it to use it as a mast for something...
    You should cut the electrical tape and push it down with no tension on it when you reach the end. Stretching makes it loosen over time. If exposed to wind it can then unravel. My electrician dad hollered at me if I stretched and broke the tape!

    • @gmonte12
      @gmonte12 หลายเดือนก่อน +3

      I cleaned a fiberglass antenna with sandpaper and recoated it with polyester resin. It worked out well.

  • @W4GHW
    @W4GHW หลายเดือนก่อน +9

    You should wrap the tape like shingles on your roof, bottom to toop, such that water runs off not in.

    • @KI5UCO
      @KI5UCO หลายเดือนก่อน +4

      Standard in commercial installation is up down up. Three layers

    • @W4GHW
      @W4GHW หลายเดือนก่อน

      @@KI5UCO Think about shingles.

  • @PopeyeFPV
    @PopeyeFPV หลายเดือนก่อน +4

    I went to HRO Anaheim today, first time ever. I walked in and said, "Josh sent me! " :) Lol, one guy said " Josh sends everybody!" (Really nice guys in there btw. I was very impressed actually, lots of knowledge, awesome place overall) I bought the Kenwood D75 and a few accessories to go with it. Anyhow, I appreciate you Josh. Great YT channel. KM6PIR ...73 👍

  • @ChrisKD9YSW
    @ChrisKD9YSW หลายเดือนก่อน +7

    Now I understand the whole weather proofing the coax and antenna. Thanks Josh!

  • @garycook5125
    @garycook5125 หลายเดือนก่อน +5

    The box on your house with "lightning arrestors", is a set up that is encouraging disaster in your radio room (if not your entire house). First, the line that you said is run to your panel, needs to be run directly to its own ground rod as close as you can get it to the antenna box. Disconnect it from your electrical panel. Run a solid piece, do not splice ground wiring.
    Next, if you insist on running a ground wire from inside the house, it needs to run directly to the ground rod I told you to connect the first line to (disconnect it from box copper plate). Again, run a solid line to rod, do not splice two cables. Just remember, having a ground rod running outside creates potential ground voltage differential that can backfire on you. Your radios are already connected to ground via the three-way A/C outlets. Ideally, all of your equipment should be powered by 1500 or larger UPSs that not only serve as backup power, but also isolate your equipment from surges in your house A/C wiring. This in itself, negates any need to run additional ground wires to an outside ground rod.
    Why? The way it is now, lightning current is being given a path from your antenna cables, directly to your radio room via the arrestors and copper plate. Eliminating this path gives lightning strike current only one way to go (down to the rod).
    Note: I'm not your typical Amateur radio licensee.

    • @HamRadioCrashCourse
      @HamRadioCrashCourse  หลายเดือนก่อน +1

      Sorry I misspoke. The service panel and my box all go directly to the ground installed by the service.

  • @RobertYonng
    @RobertYonng หลายเดือนก่อน +3

    Better to start from the bottom then wrap up so the tape over laps like roof shingles so water flows over the seams not collecting.

  • @jonathancotner7040
    @jonathancotner7040 หลายเดือนก่อน +3

    TDR = Time Domain Reflectromity. It pinpoint the change in impedence on the line. Which in your case is the open end of the coax, and in others the location of the 1st fault in the line. Every VNA can do this, including the nano VNA

  • @BurtonChristmasLites
    @BurtonChristmasLites หลายเดือนก่อน +3

    Josh I tried to look through the comments and not sure if I have seen this listed. I have several repeaters and also help some with the Skywarn Linked Repeater System here in Georgia. The capacitors in those antennas (all brands) are notorious for popping with lightning static hits. Many people will take off the "store bought" caps and replacing them with higher voltage caps. Also many folks will solder the brass fittings after tightening them. REAL important to also leave the weep hole at the bottom of the antenna open. Even when sealing up the coax to the antenna. You may not have the issues in CA but here in GA, with the humidity, heating and cooling... lots of moisture can happen within those radomes. Robert KD4YDC

  • @kg2mmhamradio
    @kg2mmhamradio หลายเดือนก่อน +3

    I too am running the same CX-333 and it has been a fantastic performer on all three bands. It has held up very well for the past 2 years it has been up here it HOT Florida. Great video as always Josh!

  • @DonDegidio
    @DonDegidio หลายเดือนก่อน +3

    Hi Josh,
    Nice installation video. Also good on weatherproofing the coax connector. Some say the CHA-250HD is only a dummy load. Doubt Comet would risk their reputation on an antenna that doesn't work as advertised. 73 WJ3U

  • @SpectrumIntruder
    @SpectrumIntruder หลายเดือนก่อน +4

    "you can only have so many hobbies" haha

  • @markw365
    @markw365 หลายเดือนก่อน +3

    Your boy is going to use that as a lance or sword. :) When weatherproofing, you start from the bottom and work up, yes in direction of "tight" for the connector. Your overlaps can catch water starting top down. We used to wrap with 3m electrical tape (bottom up), then self amalgomating, then 3m electrical and then coated it with some scotch brown gooey product. This was for shipboard antennas in the navy. But always bottom up because of the overlaps and how water would flow over it.

    • @judd_s5643
      @judd_s5643 หลายเดือนก่อน +1

      I have sealed many antenna’s on navy ships just like you described. I have been trying to figure out the name of the gooey stuff.

    • @airplaneian
      @airplaneian หลายเดือนก่อน

      @@judd_s5643 I think it may be petrolatum tape?

    • @hammathguy3995
      @hammathguy3995 หลายเดือนก่อน

      @@judd_s5643 Are you thinking of Scotchkote?

  • @garycook5125
    @garycook5125 หลายเดือนก่อน +1

    The two brackets @12:43 that come with the antenna are not designed to be bolted to the side of your house, or anything else. U-bolts use those holes, to attach it to a mast. The mast is what should be secured to your house via house brackets @9:45 that you used with your first antenna. Do not screw or bolt those U-bolt brackets to the side of your house.

  • @moonbounce
    @moonbounce หลายเดือนก่อน +1

    The CHA-250 is a good antenna and works well across all the bands with very good SWR. It is not the best, but I have made contacts world wide with it. I do recommend that it be secured with guy wires as it is not very wind resistant. It does bend a lot with strong winds and if you have a little ice with the wind it will bend over. Don't ask how I know. Been through 2 of them. It is not a real efficient antenna (some signal loss to heat) but it does work pretty well. Good luck!

  • @romien8wwr414
    @romien8wwr414 หลายเดือนก่อน +3

    Those brackets aren't supposed to mount to the wall, they are meant to couple to a piece of mast pipe. If you were to get that above your roof line the SWR would be "flat as a pancake". I've had a 333 deployed for a number of years now, amongst others. 73 N8WWR

  • @elitecombatfitnesscentral6170
    @elitecombatfitnesscentral6170 หลายเดือนก่อน +10

    Wow, so first of all, you have a Ham Radio Outlet nearby ? Wow

    • @ROBIN_SAGE
      @ROBIN_SAGE หลายเดือนก่อน +2

      Was exactly my thought. JEALOUS!!! No radio shops left in my state as far as I’m aware (Michigan) but feel free to please fill me in if there are any I’m not aware of….

    • @jeffkardosjr.3825
      @jeffkardosjr.3825 หลายเดือนก่อน

      I have a cousin who isn't even an operator who's been to one before me.

    • @matsherwood6277
      @matsherwood6277 หลายเดือนก่อน

      ​@@ROBIN_SAGE my friend from church owns a small shop called ham-sters in Dowagiac, MI and we have a radio shack in Niles, MI. They don't have everything but between the two I have been able to pick up some needed goods sometimes.

    • @fm71450
      @fm71450 หลายเดือนก่อน

      Major Jealous Moment - watching you drive to HRO. Out here, I would drive to Chattanooga to Chatt Radio (only 45 minutes). Other than that, we have HRO in Atlanta (3 hours) and GIGAPARTS in Huntsville (3 hours). Good for you! KQ4IXD

  • @SuperRamcharger
    @SuperRamcharger หลายเดือนก่อน

    I've had a Diamond X510 (model name may have changed since I bought it 15-18 years ago), 17.2 foot tall and has survived 90+ mph winds, hail that whacked my roof to the tune of 25k worth of damage, etc. Best 2m/70cm vertical ever made in my very humble opinion. Still working like a charm. Just for grins, years back, i plugged in my yeasu FT90 and talked simplex, through 50 ft of cable full quieting over 30 miles. Comet has been around for a while, but Diamond is the way to go. Yikes, just watched the assembly and construction. You do you brother, lol.

  • @LinkEighty8
    @LinkEighty8 หลายเดือนก่อน +3

    I have that exact antenna. Will be going back up again soon.

    • @HamRadioCrashCourse
      @HamRadioCrashCourse  หลายเดือนก่อน +3

      Awesome, has it worked well for you?

    • @LinkEighty8
      @LinkEighty8 หลายเดือนก่อน +2

      @@HamRadioCrashCourse very much so. I also have a GP9, but like having the tri-band. Also I wrap the connections.

  • @deltannerjr
    @deltannerjr 25 วันที่ผ่านมา

    I love how all these people are giving you advice. blows my mind. shaking my head. thanks for all you do.

  • @AdamSWL
    @AdamSWL หลายเดือนก่อน +1

    I have the Comet GP-98 2/70/23 tri-bander in use here.
    It has the same plastic collar joining the 2 sections in the center.
    I put 3M self amalgamating tape over it since the UV here in Australia will turn it to dust in a couple of years.
    They are a good antenna with nice performance on 1.2Ghz.

  • @rickpinelli1586
    @rickpinelli1586 หลายเดือนก่อน +1

    I am using a Diamond Dual Band Vertical that is 28 years old! It still works great!

  • @sstorholm
    @sstorholm 28 วันที่ผ่านมา

    For mission critical infrastructure in almost arctic conditions we do the same weatherproofing, first we seal the joint with self-amalgamating tape, then overwrap with 3M Super 33+ or Super 88. Every layer extends 1-2 inches past the last layer, so self-amalgamating goes an inch past the connectors up the cable, then the electrical tape an inch past that. The brand of the self-amalgamating tape isn’t that critical, though prices vary wildly, so make sure to check electrical supply houses etc. However, the brand and type of electrical tape is the key here, it has to be either of those. If you haven’t tried it before, this isn’t your normal electrical tape, it’s thicker, stickier, doesn’t dry out or crack in the sun etc.

  • @TheGeekiestGuy
    @TheGeekiestGuy หลายเดือนก่อน +2

    Speaking of too many hobbies, I just scored a drone, and I'm working on even more licensing. You can never have too many hobbies. I just need to make time for the fun ones now.
    I'm on the hunt for a triband, and i need to resurrect the good old yaesu ft60. I only need a battery, but I'm thinking upgrade to one of the other, slightly newer, yaesu ht's that's waterproof and triband.
    Thank you, as always, for the awesome content. I've been missing streams, but I'm still a member because I love the way you help the world with your content, brada man. 🤙🏾

  • @jonanhold1884
    @jonanhold1884 หลายเดือนก่อน

    Those brackets it comes with are really intended to mount to a mast with the provided U bolts. My suggestion would be to get a 5’ section of mast, with some appropriate mounts to mount the mast to the house, and then mount the antenna to the top of the mast.

  • @stevewoodruff5872
    @stevewoodruff5872 หลายเดือนก่อน

    That same guy helped me out last time I was at HRO. Very nice guy. He even offered me a donut and coffee.

    • @stevewoodruff5872
      @stevewoodruff5872 หลายเดือนก่อน

      And now I see you got the coffee also :)

  • @scottforbes0
    @scottforbes0 หลายเดือนก่อน

    If you run the self-amalgamating tape from lower to higher on the connection, there’s less chance of water ingress, because of the way that the tape overlaps on the upper layers.

  • @zd533
    @zd533 หลายเดือนก่อน

    Couple of tips on the weather- proofing;
    The electrical tape should be started below the connection and run up towards the top of the antenna. This will shingle the tape so water has no potential pockets to run into. We usually wrap 3 or 5 times (always an odd number to maintain shingling).
    At the end, on the very last wrap, never stretch the tape or tear it. Cut it with a sharp knife or scissors and that will keep the tail from eventually peeling back off.

  • @digitalradiohacker
    @digitalradiohacker หลายเดือนก่อน

    Hi Josh,
    I've been watching for a while - Just subscribed.
    I work commercial LMR installs in the UK - Mostly Motorola.
    TDR - Time Domain Reflectrometry
    Send a signal down an unterminated coax, and the signal will hit the far end and bounce (high SWR). Measure the magnitude of the reflected signal and the TIME it took to return, and you will know the distance to the "fault" (could just be the end of the cable). You can only do this if you know the speed of the signal. RF speed is constant, so the only variable is the VF (Velocity Factor) of the coax (speed of Rf through that particular design of coax). You need to enter the VF into the meter so that it can work out the speed - if it doesn't know the VF, it can't know the speed so it is not going to measure the distance to fault accurately.
    Colinears:
    Pretty much all colinears are made the same. The tube is fibreglass with gel-coat finish. The tube is sealed to the fittings with epoxy resin (JB Weld).
    Once the antenna has had some years in the sun, the infra-red and ultra-violet attack, and this causes the gel-coat to oxidise (white residue) and the epoxy to become brittle.
    The good news, is that the actual antenna part is literally just a copper wire. It is effectively impervious to the weather, and it is only put into the tube to keep it upright.
    Fibreglass tubes: Sand with 600 wet and dry paper, rinse off with water, dry them and then hit with spraypaint of your choosing. You now have another 10 years out of them. The epoxy may be discoloured, but I'll wager it is just fine - the various manufacturers seem to have learned that cheaping out on the epoxy resin = bad reputation.
    Pull the wire out of the tubes and just clean up the ends with scothbrite.
    The tarnishing on the radials is not a problem. Even at DC, you would need something like a micro-ohmeter to measure the resistance. Flush the connector end of the antenna out with carb-cleaner and then send a blast of deoxit through and you will be golden.
    Reassemble exactly as you did - Self amalg-tape starting from the bottom (overlaps like tiles for water run-off) and then cover the self amalgamating tape with electricians tape - Self amalg is not UV stable wheras electricians tape is.
    Try to leave less coiled up cable flapping in the wind - it will weaken the joints and lead to issues like you had.
    Get some proper cable cleats for LMR to secure it.
    Hope this helps!

  • @tubosolinas
    @tubosolinas 25 วันที่ผ่านมา

    The installation of the antenna was covered by others.I will cover the safety aspects of this (as an IRATA technician)The cheapest/safest/efficient way is to use a safety harness with a fall arrest lanyard.You know you'll be servicing-visiting your antenna so a permanent anchor near the antenna will be your best bet.A fall from 3 meters (10 ft) might be lethal.OSHA will thank you

  • @synonyx
    @synonyx หลายเดือนก่อน

    I just installed a CX-333 at my house. Works great so far! Very low noise and low SWR as advertised.

  • @frankthetank3342
    @frankthetank3342 หลายเดือนก่อน

    I read from a professional radio direction finder producer, that it's better to place aluminum foil around bottom of magnet, then place thin felt piece between the aluminum foil and the car body. Supposedly, a regular 3" magnet at VHF frequencies has about 473pF. With the aluminum and felt, more like 1,700pF.

  • @heiser_bill
    @heiser_bill หลายเดือนก่อน +1

    I wish I had an HRO closer than a 5 hour round trip. Oh, wait, that might be bad... 🤣

  • @MatthewFiereck
    @MatthewFiereck หลายเดือนก่อน

    I also use that coax shield or self sealing tape to wrap my trailer wiring harness. It gives the wires and plastic wrap an extra layer of protection from road and rodents.

  • @vincentmichaels7514
    @vincentmichaels7514 11 วันที่ผ่านมา

    If you wrap the tape from the bottom to the top, the wrap will offer better resistance to water.

  • @HamRadioWithKE0MAD
    @HamRadioWithKE0MAD หลายเดือนก่อน

    When wrapping tape/coax seal, always start from the bottom and wrap up so the layers overlap like shingles on a house.

  • @elberttanner6189
    @elberttanner6189 หลายเดือนก่อน +1

    Suggestion: Add a grommet to that opening in the back of the antenna box.

  • @Jody_VE5SAR
    @Jody_VE5SAR หลายเดือนก่อน +1

    I've had a CX-333 up for 3 years. Great antenna!

  • @leeharrell67
    @leeharrell67 หลายเดือนก่อน

    One recommendation I would make… when you’re taping your connections, start at the bottom and wrap upwards. Why? Water will usually enter a connection from the top rather than the bottom. When you wrap from the bottom up, the seams are facing downward, not unlike roof shingles.

  • @KO4VNX
    @KO4VNX หลายเดือนก่อน

    I have maybe 20 guitars in my house at the moment, and I salute your self control!!!

  • @CQCQPurgatory
    @CQCQPurgatory 16 วันที่ผ่านมา

    Hope you have fun with the 250. For being "the antenna that doesn't work" I've heard plenty of great things about it.

  • @pedrocatalan9814
    @pedrocatalan9814 หลายเดือนก่อน

    Nice job Josh. I've had a CX-333 up on my garage roof for almost 10 years, still a perfect match on all 3 bands. Great quality base antenna! Good job with the weather proofing! Here in rainy Vancouver, it is a must!

  • @robertbatchelor908
    @robertbatchelor908 หลายเดือนก่อน

    I've had my Maldol dual band antenna up for 15+ years. It still works well. Bob, W2OSR

  • @robertmeyer4744
    @robertmeyer4744 หลายเดือนก่อน

    Great job Josh ! Love the coax weather seal you did ! great triband antenna ! Comet had great stuff ! I use a product from M & P called silicone seal and it comes in 2 sizes. You put it over the joint you want to seal and pull the string. It is cold shrink. If you seen the Pota flex 6 or 7 kit with winder the ends have the silicone seal installed on it. Another great way to waterproof joints. 73

  • @kchaney56
    @kchaney56 หลายเดือนก่อน

    Wow, I have been assuming that my antenna is fine but after watching this I am going to lower it and check ALL of the connections and weather proofing. The weather in Tenn can be extreme and change very quickly.

  • @kevinmatthews2620
    @kevinmatthews2620 หลายเดือนก่อน +1

    lucky you Josh having a ham shop near you,for me in the UK my nearest shop is 160 miles away,but theres a cafe just down the road that does a killer full english breakfast so the journey is doubly worth it, boy i though my shack was chaotic ,yours trumps mine by a country mile :) :)

  • @JoeSoubie
    @JoeSoubie หลายเดือนก่อน +1

    Waiting for that test. I'm looking for an HF vertical to mount on a 17 foot mast above my townhouse without anything that attaches to the building per the hoa rules. Also must meet up with the architecture committee requirements. 73's KG7COA

  • @johnnyzippo7109
    @johnnyzippo7109 หลายเดือนก่อน

    Off topic but I must post this comment . I just had the honor of listening to , while reading the translation of Jeff Beals , Life Eulogy . Being transmitted at eighteen words per minute , ( CW ) absolutely phenomenal ! Unto Jeff Beals , his eternal Soul , Jeff Beals family , praise be unto God , seated at the right hand of His Father , A Kingdom that has no END , Godspeed Mr. Beals , and He is said To Go .

  • @seandrake7534
    @seandrake7534 หลายเดือนก่อน

    Ok safety tip
    If you are going up on the roof make sure you have someone around Incase you do fall !!! But if you are going to be in a safety harness but all means have someone around and have a plan to be able to get you out quickly !!!! The problem with a safety harness is it cuts off the blood to your legs and causes major problems if you are hanging in one longer than 10 minutes !!!!!!!
    You can tie rope to parts of the harness with a loop in it big enough to be able to get your foot into so you can kind of use your legs to stand up so to say to relive the pressure and get blood flow back !!!!
    Also your anchor point must be sturdy There is a tremendous amount of load and shock when you stop falling also if you do fall go to the ER and get checked out !!!!!

  • @reallunacy
    @reallunacy หลายเดือนก่อน

    As far as sealing the cable with tape, that first tape may be fine, but electrical tape really isn't great for high temps such as years of being outside. Something to consider is there is a product called duct seal that many electricians use for exterior penetrations that is rated for the severe duty of being in an exterior environment.

  • @tomfoley1265
    @tomfoley1265 หลายเดือนก่อน

    Can't wait for your Comet CHA-250HD install. I have one because I can only install a vertical and can't run counterpoises, and its been great! particularly with the Yaesu inbuilt auto tuner.👍

  • @bruceweight7319
    @bruceweight7319 หลายเดือนก่อน

    They sell Rescue tape at ace that is multiple colors. Same silicone stuff and it works really well. Always use 3M 33+ Did electrical work all my work days and 3M is assume!

  • @HamRadioDX
    @HamRadioDX หลายเดือนก่อน

    You might be able to save that MFJ pulsar. If it's similar to the Comets and Diamonds - the issue might just be one of the disc capacitors in the base.. Usually they go open, short or burn out. Nice job Josh

    • @HamRadioCrashCourse
      @HamRadioCrashCourse  หลายเดือนก่อน

      That seems to be the consensus. I might take a look.

  • @ch716
    @ch716 หลายเดือนก่อน

    Seems like a perfect antenna for the th-d75

  • @keen2travel
    @keen2travel หลายเดือนก่อน

    I wrap my connections from the bottom up so that the rain/water runoff flows over the bottom of the tape "loops" instead of the top edge. My logic is that it keeps any loops that have loosened from allowing water intrusion. Just my $.02.

  • @waynepeterson5460
    @waynepeterson5460 10 วันที่ผ่านมา

    You should always wrap from bottom up so your wraps shed water!.

  • @Kq4hcuDan
    @Kq4hcuDan 13 วันที่ผ่านมา

    Im glad i dont use ladders much anymore, last time i used a ladder similar to yours i fallen off my inlaws roof in longpine comiefornia.

  • @jslawsby_W5GI
    @jslawsby_W5GI หลายเดือนก่อน

    Love the antenna box. I have 2 of them from him

  • @Pedro8k
    @Pedro8k หลายเดือนก่อน

    Took one of these Tri bands apart once and the problem was a dry joint on the small capacitor on the loading coil it would swr ok on uhf but high on lower bands

  • @ehayes5217
    @ehayes5217 หลายเดือนก่อน

    Good to see how u wrapped the coax with the seal, the electrical tape, etc; I always wonder if I'm doing it the best way possible, LOL 👍😃🇺🇸

  • @Macjohn1419
    @Macjohn1419 หลายเดือนก่อน

    Any vertical antenna I install, I always have a habit of making a 4-5 turn loop of the coax and securing it to the mast below the radials for an additional choke to prevent any current coming back down to the shack.

  • @86casimir
    @86casimir หลายเดือนก่อน

    Always great videos that you share with us. Thanks again to you Josh and the good 73s.....Too bad that in France we no longer have adequate stores for amateur radio (no stores of this type for at least 20 years) unlike the USA. Joel/F8MGW.

  • @jeffjohansen4945
    @jeffjohansen4945 หลายเดือนก่อน

    Great video Josh ! Yes to the expensive 3M electrical tape.

  • @gregorybirchfield4952
    @gregorybirchfield4952 หลายเดือนก่อน

    Nice to see someone still keeps a old school map book in their vehicle.

  • @CriticalThinker-42
    @CriticalThinker-42 หลายเดือนก่อน

    The self amalgamating tape wrap direction doesn't really matter, but I always wrap it and the protective electrical tape from the bottom up so it acts like shingles on a roof to shed rain water. Why leave edges up for water to more easily ingress if the adhesive fails somewhere? Remember Murphy's Law. 73 mike 🍺🍻

  • @TheGmr140
    @TheGmr140 หลายเดือนก่อน

    Nice antenna works well 😊

  • @winstonchurchill6506
    @winstonchurchill6506 หลายเดือนก่อน

    A couple layers of shrink wrap always works for me cheers sir u k

  • @Calamity_Jack
    @Calamity_Jack หลายเดือนก่อน

    So you have a lightning arresting system. As a relatively new ham, I wish I could get clarity on this issue. I've watched so many videos and read so many lengthy treatises on this subject lately by supposedly very knowledgeable experts in radio and electricity who can't seem to agree: 1. whether lightning arresting is needed for antennas and radios, and 2. if so, how best to achieve that. Everyone seems to have a different, very strongly opinionated take on the subject. Since it concerns safety, it'd be nice to have definitive consensus on this issue.
    Anyway, sorry for diverting from the main topic; thanks for showing your new antenna installation - looks awesome!

    • @HamRadioCrashCourse
      @HamRadioCrashCourse  หลายเดือนก่อน

      You should use good lighting protection. If that is grounding at the antenna source or tower or lightning arrestors at a property installed ground rod as close to antennas as you can you’ll have the best results.
      Regardless of the best lightning protection if you take a direct hit you’ll still likely lose radios. In most cases the goal is to dump static from the antenna system.

  • @DonzLockz
    @DonzLockz หลายเดือนก่อน

    I now need to do the same with a dual band antenna. Thnx for the tips. :)

  • @davidg5308
    @davidg5308 หลายเดือนก่อน

    Was that a Thomas Guide I saw in the seat back pocket?!? Ultimate LA prep tool for the big one! Nice antenna, hope it's a winner.

  • @dkillian33
    @dkillian33 หลายเดือนก่อน

    Have been using a CX-333 for a couple of years, absolutely no issues.

  • @scottmorris4914
    @scottmorris4914 หลายเดือนก่อน

    I would add the weather proofing to the middle point as it will provide protection to the plastic from the sun

  • @REKlaus
    @REKlaus หลายเดือนก่อน

    I like your box setup. It is pretty much the way a broadcast station should do it, "ground"as close to the electrical entrance as practicable and then run through the building to the radios.
    Thanks for sharing this video
    K1AUS

  • @ka4ezy
    @ka4ezy หลายเดือนก่อน

    A nice, clean antenna installation. Good job! As for the CHA-250HD for your next project, I can’t wait to see that video. It is a compromise antenna on hf , for sure. Even Comet’s own ad says so. However, it should work moderately well. I can’t say for sure but it looks to be a variation of the Rybakov antenna. Good luck and keep up the good work!

  • @Thunderontheroad
    @Thunderontheroad หลายเดือนก่อน

    I’ve been looking at the 250hd so I’ll wait to see the results.

  • @KQ4TXJ
    @KQ4TXJ หลายเดือนก่อน +1

    I wish i could say, “I need to go to HRO, as well.” ❤❤

    • @timel64
      @timel64 หลายเดือนก่อน

      HRO FOMO😂

  • @fatboymotorsport
    @fatboymotorsport หลายเดือนก่อน

    When the fail on 70cms it's usually a small capacitor that fails inside them, they are all the same,

  • @Emcipio
    @Emcipio หลายเดือนก่อน

    I managed to make a software matrix mixer work for me with my FT-710 thanks to a fellow from your discord! It's not perfect, it requires me to reconfigure if I want to run digi and not have my mic bleed into it. But I'm sure that a hardware interface would do the same thing.

  • @CruiseControlVideo
    @CruiseControlVideo หลายเดือนก่อน

    Hey Josh, I'm actually looking forward to the CHA-250 HD Install and test. There are some antenna build videos of that model on YT but I don't think I have seen a test. I have seen Diamond BB7v which seem similar to the Comet and users were pretty happy. I always thought Comet and Diamond were owned by the same people but found out they are completely different entities. Thanks as always for the great content. 73

  • @hardwired3640
    @hardwired3640 หลายเดือนก่อน

    Electrical taping is an art, looks good

  • @user-ol5zt9bt9i
    @user-ol5zt9bt9i หลายเดือนก่อน

    Good one Josh though would argue the direction of winding the tapes. At least the insulation tape should be wound from under the connector to the top as if there is moisture at all it would tend run over the lap down falling onto the next ayer. Theoreticaly the moisture doesn't sit on the next wrap below allowing possible ingress between the wraping layers. Yes but who am I to argue hi. Thanks man cheers from VK5 land.

  • @DarkShadowCustoms
    @DarkShadowCustoms หลายเดือนก่อน

    I am curious about that no radial required HF antenna. Looking forward to that video.

  • @RCVinyl
    @RCVinyl หลายเดือนก่อน

    Running the same CX-333 anteanna and it works great on all three bands. Also have a box from KF7P which is fantastic! Enjoyed the video.

  • @503Nick
    @503Nick หลายเดือนก่อน +1

    Nice instruction

  • @SidebandSamurai
    @SidebandSamurai หลายเดือนก่อน

    Great video. love to see more of these.
    I know that HRO very well. Been there several times. I could tell you a Covid story about the service I got there. It ended up to be a good ending but only because another store employee who cared stepped in. So a couple of questions. What about shrink-wrapping your coax cover / electrical tape for more protection. Your cut away of the old antenna did show you don't need it but it was a thought.
    i know this was a time issue but what about Ed Fong's TBJ-1 tri band "J" pole antenna. I don't know what you paid at HRO but I believe this is about $70.00 All SWR testing went below 1.5 to 1, and only 7 feet or so tall.

  • @sockeatinggolden8316
    @sockeatinggolden8316 หลายเดือนก่อน

    I'm needing to finally expand my qth shack with vhf/uhf capabilities. Thanks for the video.

  • @KC4KLM
    @KC4KLM หลายเดือนก่อน +2

    I am running the same CX-333 and it has been a fantastic performer on all three bands. Good tips in the vid.

  • @CCWSig
    @CCWSig หลายเดือนก่อน

    Good stuff, but your tape should run botton up while wrapping. It should shed water like shingles or flashing on a roof.

  • @stephenkramme7063
    @stephenkramme7063 หลายเดือนก่อน

    Another informative video, I always learn something in the comments section as well. Nice guy Bob KB6CIA of HRO makes a cameo appearance. Nice teaser at the end Josh. KD6KXT

  • @douglasvamateurradioandmore
    @douglasvamateurradioandmore หลายเดือนก่อน

    Im getting 80s vibes from the music heading to hro

  • @ltrisher
    @ltrisher 9 ชั่วโมงที่ผ่านมา

    I wish there was a HRO in MI.

  • @luish19779
    @luish19779 หลายเดือนก่อน +1

    I love to do that- go to the store & buy my antennas , coax etc- I live in NYC & everything I have to buy online. 👍📡 KE2AUM-73

  • @The_Comms_Channel
    @The_Comms_Channel หลายเดือนก่อน

    Have a CX-333 on my roof and it's been a great antenna.

  • @Machria23
    @Machria23 หลายเดือนก่อน

    Shoulda got the Diamond 6000a Tri-band, GREAT antenna.

  • @kd4exy
    @kd4exy หลายเดือนก่อน

    That antenna is said to be the best 220 antenna. I think it is a great antenna