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Get a BIGGER Antenna on Your Gabil GRA-7350T for Portable POTA SOTA EMCOMM Operations
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- เผยแพร่เมื่อ 12 ส.ค. 2024
- Get a BIGGER Antenna on Your Gabil GRA-7350T Portable for POTA SOTA EMCOMM Operations. Works with the Comet Toy Box antenna as well.
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AMAZON / EBAY AFFILIATE LINKS TO PRODUCTS IN THE VIDEO: I may receive a small commission
➽ 3/8/24 to M10/1 Adapter -- www.mcmaster.com/98434A807/ (Not affiliate link)
➽ MFJ-1979 Telescoping Antenna -- amzn.to/3EUOH7r
➽ Manpack 7 Element Whip Antenna -- amzn.to/3VHOtqa
➽ Gabil GRA-7350T Telescoping Antenna -- amzn.to/3bqX0uU
➽ GRA-ULT01 Antenna Mount Tripod -- ebay.us/4zDfgb
➽ My Favorite Ground Spike -- ebay.us/l2Bbq0
➽ Comet AD-35M SO-239 to 3/8 X 24 Adapter -- amzn.to/3QrMF0Q
By using my affiliate links, I may receive a small commission.
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Bob,
Happy to have you back, safe and sound.
For attaching dissimilar metal objects, with the idea to be able to take them apart later, I use Permatex Copper Anti-Seize Lubricant on the threads. Works very well especially on PL259-SO239 connections. [you know the ones I'm talking about].
1 oz. tube at your nearest Napa Auto Parts store.
Appreciate the tip on the anti-seize.... Thanks for the kind words and for watching.
Glad you and your family made it through the hurricane. Thank you so much for the info.!
Thanks for the kind thoughts and words Joe.
Awesome video. I ordered the Manpack Whip and the McMaster adapter tonight. The hurricane was absolutely crazy down here by Babcock Ranch. Lost lots of shingles on our house and hundreds of trees down in our woods. Otherwise made it thru the storm pretty good. No flooding. It will take all winter to cut n burn those trees. de Mike WE0H ..
Mike, so sorry to here about all the damage; that must have been terrifying. Wife and I spent 2 years in Ft Myers on a work assignment and are so sad to see the loss so many have experienced -- can't imagine going through that.
Stay safe clearing all the trees!
Glad to have you back after the storm
Thanks James. Great to be getting back to normal...
Glad that you are doing well, God bless you and yours.
radioactive, He has immensely! Thanks.
Glad to hear you and your family are safe. Also glad to see you back with more great videos! 73. Joe - W7BWA
Appreciate that Joseph. Glad to be getting back to normal.
I like modular systems like this, very handy stuff! Thanks Bob 👍
Thanks for watching Ape! Always appreciate you input and feedback!
@@HOAHamRadio Hey, I love the videos. Great green screen work BTW
Great idea, I'm a design engineer and spec out stuff from McMaster-Carr all the time. I didn't stop to think about them recently when I was trying to put an odd whip on my Slidewinder DX coil. Good call!! 73, Walt
Thanks for watching Walt. You must remember those HUGE paper catalogs they sent out; couldn't wait for mine to arrive.
Thank you for all your research identifying the odd (metric) thread on this antenna and a viable adapter. Bruce
Its what I do, I can't help myself. Thanks for viewing and the positive feedback.
Thanks for another video. Glad all is well at your house in Florida. -73 de Oklahoma
Thanks Stephen, appreciate the kind words.
Welcome back!
Thanks Eric. Just felt strange not being able to get in front of the camera and talk to everyone. Glad to be back.
Основательный подход! Отличная конструкция!
Thanks for watching and commenting Alexey.
Thanks!
Thanks Marc, very much appreciated.
That adaptor is just metric fine to UN fine.
I need to grab one of these antennas to play with.
Small but affective! Thanks for stopping by and watching.
You can buy a 3/8-24 sized tall nuts like the one you use here - and then re-tap half of it to M10 1 or M10 1.5 depending what the pitch is. I was able to put the mil whip on my JPC12 that way. Regards.
P
Appreciate the solution exotime; them ore options the better. Thanks for stopping by.
the original antenna is 7ft tall as i recall, adding these antennas instead only adds 2 to 10 ft.... doing so will cost you 10 meters at least maybe 12 and 15 too? but I wonder if to increases the bandwidth on the lower frequencies?
Bob, have you been able to find the replacement whip for the GRA-7350TC - the 3/8-24 version?
Do you mean, an exact replacement for the one that originally came with it? If so, I can check with Gabil and see if they plan on restocking it on Amazon. They used to sell them, but its not showing right now.
What about the weight of the taller antenna and the slide adjustment.
Thanks for watching Marvin, and great question. The slide mechanism has a polymer nut at the bottom of the black shaft that locks it in place. When I slide it up and down at will, I don't have the nut tight. I've actually done some testing on that very issue and will be sharing my findings in my torture test video. I used the MFJ-1979 and it didn't slip over short periods of time that I tested it. Were you to leave it outside in the wind for extended periods it may slip a little, but then it really isn't designed as a permanent outdoor antenna. I am targeting the torture test video in the next 2 weeks.
What bands can you tune with the manpack antenna and the sliding coil? Does it work for 10-40?
12 through 40
Have you lost antennas during the IAN Hurricane that was installed outside in your yard?
The short answer is, by design, no antennas were lost, and the attic space became the ideal antenna location while we road out the storm.
Based on my HOA conditions, all my outside antennas are installed so they can be taken down quickly, if needed. My station reference antenna is a 73’ endfed connected to a CHA Hybrid Micro. 36 hours before landfall Tampa was right in the center of the forecasted track, so I took the antenna down, knowing tree branches over my wire would be coming down in 130 MPH + winds.
At that point, I used an attic dipole to stay connected till we were clear of danger. That left me single banded, but as long the roof stayed on the house, I would have an antenna.
Glad to say, as of this week, the 73’ wire is back to hiding in plain sight, connected to the CHA Hybrid Micro.
Do you know if the Toy Box also uses the M10X1 threads? Any idea if anyone has tried this and how the taps are used? I would think with the longer whip, the tap would go up in bands, such as use the tap for 20M to work 30 or 40. Tnx for the videos, 73 WB4GUD.
When you add the longer whip to a sliding coil, you change where you would adjust the coil for a particular frequency from when using a shorter ship. Trying to pull that off with the Toy Box, I believe, would be near impossible. You have no way to know how the longer whip interplays with the tap locations.
Does the friction of the telescoping tube support the extra weight of a larger whip?
Great question James. The slide mechanism has a polymer nut at the bottom of the black shaft that locks it in place. When I slide it up and down at will, I don't have the nut tight. I've actually done some testing on that very issue and will be sharing my findings in my torture test video. I used the MFJ-1979 and it didn't slip over short periods of time that I tested it. Were you to leave it outside in the wind for extended periods it may slip a little, but then it really isn't designed as a permanent outdoor antenna. I am targeting the torture test video in the next 2 weeks.
I think these longer 17 foot antennas can tune 20 meters without even using the loading coil under it. Supposedly you can just put the 3/8 antenna right into the tripod or spike connector... I was thinking the same thing, if the higher weight of the antenna would cause you to have to really tighten that nut to keep it from slippage.
Just got the 3/8"-24 to M10 x 1 mm adaptor you mentioned from your link but as the 3/4” -24 end fits my other antennas perfectly, the M10 x 1mm doesn’t so they’ve either changed the threads on it or they sent me the wrong adaptor. Haven’t heard back from the seller yet. I just may have to retap it.
Anton, that would be a shame if they changed it! Let me know how it turns out for you.
@@HOAHamRadio just ordered one will let you know if mine comes in wrong
@@jchd2004 Appreciate that Joel. McMaster Carr is pretty good; I'd like to know if I got my wires crossed up some how.
Sending my GRA-7350T back to Amazon. Within a day the scale is falling apart where the clamp grips. Same issue as seen on another TH-cam video. This scale needs to be laser engraved on the tube not a piece of tape! Since they took your last suggestion, would you bring this up with the manufacturer?
Randy, I really appreciate you bringing this up. If people are having issues, its helpful to make me aware. I only want to talk about gear that is reliable. This is certainly an issue and I will relay the concern to Gabil to see if this is a problem more common than I am aware. You mention a TH-cam video that covers this issue; would really appreciate a link so I can also send that to Gabil.
th-cam.com/video/LS17tVl3F0U/w-d-xo.html
They fixed it and it is laser engraved.
Look job for my metal lathe
I wish I knew you had some open capacity Joseph, would've gotten my hardware a lot easier and faster!
What kind of tripod are you using ?
Its by G Gabil Radio. They recently sold out after a big promotion; should be back in stock mid June -- amzn.to/3UE7gmg
It is back in stock; here is the link: amzn.to/3UE7gmg Try this discount code, it if is still active it would get you 15% off: 15JWHYTL
Pac-12 is great!!!
I've heard lots of good things about the Pac-12
Does the Gabil lock in place at all once adjusted? I would be concerned that the weight of something like the MFJ collapsing the Gabil throwing off the tune.
Thump2010, yes, it has a polymer nut at the bottom of the black shaft that locks it in place. When I slide it up and down at will, I don't have the nut tight. I've actually done some testing on that very issue and will be sharing my findings in my torture test video. I used the MFJ-1979 and it didn't slip over short periods of time that I tested it. Were you to leave it outside in the wind for extended periods it may slip a little, but then it really isn't designed as a permanent outdoor antenna. I am targeting the torture test video next Friday.
18dollars ??? For something easily make one with connector bolts either 3/8 or 10mm and same taps ..just retap , they are very similar threads.
David, perfect idea. If you have the tap that's a simple solution.
I was kind of wondering if you could do that. It would be cheaper.
what is the benefit?
A longer whip will reduce dependence on the coil being used to get resonant; i.e., the longer antenna will be more efficient.
@@HOAHamRadio at the expense of some of the higher bands?
With the telescoping, you just manually collapse them to get your higher bands; no sacrifice. Withe the manpack collapsible, yep, you loose 6, maybe 10...don't recall.
@@HOAHamRadio BTW: Thank You for responding, there are too many influencers who never respond.
@@HOAHamRadio thank you.
IDIC - infinite diversity in infinite connectors. It's just as bad as plumbing!
I hate plumbing! Although that is where I learned to solder.
@@HOAHamRadio I still can't solder pipes with water in them. Fresh pipes are easy though. For plumbing work, I buy way more than I need, finish the job and return the unused stuff. Such a pain!