I’ve just finished this and tuned, I did have a problem finding 17 m on the nano vna, I had the upper element to long, I found it lurking around 20m (very narrow band width) now ok swr on both below 1:3. Cheers Tim, keep theses projects coming, I love it b
Isn't it more efficient to use the collapsable telescopic whip (5 meters long maximum) on 17 and 12 meters (collapsing it on 12 meters)? I use it with a mag-mount on the top of the car (where the car body serves as a counterpoise). This setup needs no transformer (i.e. it avoids losses in the transformer).
@@brianfields4479 And it works. I had a 100w on my side 1/4 wave on a top of a car contatct from Cumbria to Australia (Long wire on that side on 100w) 5/7.
I suppose you could try it horizontal as well . I can get the Xeigu g90 to tune both 12 and 17m on the 40-10 m EFHW and had decent results despite it not being one of the harmonic bands .
Regarding the impedance of the coil, the maximum is obviously where no extra bit of wire is needed - but what about the minimum, how much is the minimum you need to choke off the 12m part of the antenna? How does it cut off, is there a sharp cut off between the 12m bit being choked and not being choked or is there a gradual increase as the inductance increases?
I often go to the dark side - 11m - lol because the force is often as strong as 12m with a much bigger scope for QSO's . Hopefully that does not make me bad ? 73 M7BLC / 26CT3775.
I’ve just finished this and tuned, I did have a problem finding 17 m on the nano vna, I had the upper element to long, I found it lurking around 20m (very narrow band width) now ok swr on both below 1:3. Cheers Tim, keep theses projects coming, I love it b
Thanks, Tim. I always learn a lot from your videos and get plenty of ideas.
Another short and good one. Thank you Tim!
Thank you!
Great project! Thanks Tim!
Isn't it more efficient to use the collapsable telescopic whip (5 meters long maximum) on 17 and 12 meters (collapsing it on 12 meters)? I use it with a mag-mount on the top of the car (where the car body serves as a counterpoise). This setup needs no transformer (i.e. it avoids losses in the transformer).
Exactly, keep things simple.
@@brianfields4479 And it works. I had a 100w on my side 1/4 wave on a top of a car contatct from Cumbria to Australia (Long wire on that side on 100w) 5/7.
As a QRP operator, I love 17 meters ! Its one of my favourites for making telephony contacts on
Hi Tim keep up the good work 👍
Thank you!
Tîm... Oh Tim!! .. Thank you so much for a wonderful distraction from the insane world we now live in!!! ❤❤
Thank you we all need it!
Thanks for the nice video Tim !
I suppose you could try it horizontal as well . I can get the Xeigu g90 to tune both 12 and 17m on the 40-10 m EFHW and had decent results despite it not being one of the harmonic bands .
Nice Tim, very nice indeed.
Thank you Peter
Thanks 👍
👍😁 phil, Suffolk.
Regarding the impedance of the coil, the maximum is obviously where no extra bit of wire is needed - but what about the minimum, how much is the minimum you need to choke off the 12m part of the antenna? How does it cut off, is there a sharp cut off between the 12m bit being choked and not being choked or is there a gradual increase as the inductance increases?
Thanks for sharing Tim. Not sure why, but my 20m resonant vertical works really well on 17m hi. Weird eh. 73.
I often go to the dark side - 11m - lol because the force is often as strong as 12m with a much bigger scope for QSO's . Hopefully that does not make me bad ? 73 M7BLC / 26CT3775.
I feel a strange presence in the force young John..😅
given the behaviour of some on 80m, 11m seems quite civil these days :D
The dark side of freedom? 🤔🤭
add 10% to the formula results.