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Excelent work... i have oportunity to buy this radio but i am afraid because its too old... what do you think ? is it a really big risk to buy such old transceiver ?

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Very nice. Did you, by chance, build a 2 meter version? De WB2VUO in Amherst, NY

THANKYOU Peter! I found your video very interesting and to the the 4 thumbs down on your vid... Must have been 'typical' sad hams. Newer HAMs like me and others can learn a lot from your experience and knowledge and reviewing tutorial comments. There is so SO much diversity to our hobby and so SO much to learn. I hope 2025 is a good year for you and keep up the informative videos. You are obviously passionate, knowledgeable and keen to educate on HAM radio. Cheers.

Thankyou!! I actually found your video very interesting. 2200 & 630 metre bands are on my radar.

can a SWR meter be used for fine tuning or a variable capacitor

Great idea. Can you provide measurments?

What a rare, fine and helpfull video. Just got into the same issue. Same type does not always switch on. So now I know where to start. Where did you get the IC replacment? The Type 2SK3491is not longer available even the replacment suggestion seems to outphased. .

I didn't realize you were on the youtube until today. Thanks for the great resources on your website.

Thank you for this wonderful video! I'm going to do this on my TS-930S now! KF8CKY - 73's!

Thank you. Interesting.

very interesting design to that aerial, imagine it fitting in a nose cone on a jet,

This experiment is highly interesting. Thank you very much! Keep in mind, it only gives us a (kind of) near field measurement. VHF/UHF Signals go several paths and are reflected in unpredictable ways. Each reflection causes a change in polarity. So this near field experiment is not what you might experience when operating in real life. The essential is, you will receive better on VHF/UHF using a circular polarized antenna.

Very interesting and maybe a good candidate for the SatNOGS projects. I wonder how this would compare to the eggbeater antenna and how it would react to a ground plane being placed underneath it.

Thanks for your video. I thought the cross pol measurement of -28dB of your reference dipoles was excellent confirmation of your setup. I am very interested in the cross pol loss when your reference dipoles are at 45degs.

Excellent work

Yes good video as I have the same radio and I will know what to repair. Thanks for sharing.

Very beautiful design! Thanks for sharing. ~ 73 ~ AC7WH

Great Job Peter! KD6ILO

Very Nice, well done great job.

Hi Peter if you need to do further adjustments after gluing 5 minute epoxy is soluble in / with hot water we used it to glue opal on to dop sticks and soaked them in hot water to remove Jb

I'm sure a neighbor has a tig welder, just gotta find em and figure the right bribe to turn that artwork into one permanent solid piece.

Can antenna like this be used to transmit a frequency to overwhelm or jam a toy drone?

Would this antenna work for LORA devices?

Good Joobs

This looks so Slick and interesting (I need to build one).. But how anyone ever figured out to use this Shape is, It looks like someone accidentally stepped on a QFH Antenna (And Discovered it still worked)

The genius was to plug the data into the mana-gal modeling software. Very nice work.. John Limanowski N9DNB

Very cool. I've made a few of these type for the 1-2.5 ghz range to combat reflections for real-time video. They're really neat and fun to build.

What an interesting antenna! If for whatever reason I wanted left-hand polarization, I would perform the bending of the element ends opposite to what you showed here? 73

looks like an artpiece.very nice!

You need borax to solder silver

Fascinating. Thank you.

🤔Well done sir.

I was Thinking perhaps you could share the GAL File On your Web Page. Thank you very much for A good video

Great work. To lower freq to 440MHz would you lengthen elements say by 5mm to 725mm? What type of N connector is that and where can a VK7 get one? I guess there is a 5mm nut under the as well over the smaller centre conductor plate fixing in place?

very cool PETER 👌73 de Clubstation OE8 XKX

Thank you very much, i ll try fixing mine. Just like yours the first piece seems to have changed value for me too

which VNA Software are you using?? is it SiLord???

Good

interesting video, the F/B ratio,? will it not suffer as the reflector , gets closer to driven, also the first driven plays a major role in impedance.. johan zs2cx

I'm rebuilding a 18ele 440mhz homebrew yagi. I'm not fully seasoned on this, but I'm using a high grade of RG6 here to feed most of my antennas here..HF/VHF and UHF with no problems. Question is how would using 75 ohm coax effect the length of the coax matching stub....assuming it's still needed? I appreciate your video....shows me much I needed to see, for my driven element is needing complete restoration, and it's director is gone. Thanks.

Thank you! Very helpful to see, and hear you describe, the repair techniques and considerations you had! As @fredvicary5935 suggested, it gives us confidence 🙂 I have two TS-450S's, one in California, one in British Columbia - both needing repairs. Any suggestions are most welcome! Thank you again.

Really cool Peter! I though that a J-pole driven element was a good idea, but was unable to find much info until now about how to employ it. I love the hose clamp idea with adjustable elements. The NanoVNA sure makes doing this a lot easier. I really like the use of a receive antenna and s21 measurements for comparison. Using flat metal also gives us the possibility of using old scrap material. Take care and 73- W1RMD

El C 101 ¿No es de 6,3 Volt.?

Saludos desde mi país.. Mi kenwood Ts 450 S he detectado que solo sale con muy poca potencia unos 20 W en AM/FM/SSB.. este condensador que nos muestra ¿ afecta a la transmisión.? También he detectado que en la escucha en USb y en LSB no hay mucha diferencia al momento de escuchar pues se entiende con facilidad en las dos modalidad. Saludos cordiales y gracias por documentarnos... Saludos desde la zona EA... Ea2ecp...Operador Isidro

Thankyousir

ENJOYED YOUR VIDEO HOW LONG WAS THE 75 OHM BALUN FOR 435 MHZ. I AM BUILDING THIS YAGI

I just put the original globs that srew in back in looks mint i prefer the original clour but everyones different choice i purches the oringanal globs as nos and have enough to last forever 73s

Very interesting and informative

Actually, I did the same thing but I did not have to do that jumper. Once you clean the pads properly with solder blobs from the factory, aftermarket battery's tab are long enough to reach them. But great video nevertheless.