Ham Radio - Updating my home built antenna tuner with an optional whip
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- Опубликовано: 28 авг 2024
- I put together a little add on telescoping whip for my QRP L-network antenna tuner. Works pretty well!
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Hit me up on the echolink repeater down by my house:
W9TE (Node: 519521)
Like a "miracle whip" antenna.... I it made from ferrite slug variometer - transformer and 1m whip and good work.
Hi Kev- thanks for your thoughts and temprement- hope thing look up for you soon.
cheers
john
I had to sell all my equipment as well. All had left was a HT@
Hello . DE VU3IZD. The BC611 handy talkie radio used by US Army in WW2 uses 1.5 M long telescopic whip . The radio is working on 3MHz i think. I checked the diagram of the BC611 . The radio usese a loading coil for match the frequency with the whip. How is the calculation of the loading coil for whip antenna?
Google is your friend. I searched for loading coil calculator vertical.
www.66pacific.com/calculators/coil-shortened-vertical-antenna-calculator.aspx
Kevin,
Electronics was my career until 2005. After being laid of with may other engineering types it took about a year to convince myself it was never coming back. I was looking
"lucky" as I had time to go back for a masters degree in another field across two years to get a job that paid about 1/2 what I was making before. I made it to Social Security and quit working. I understand what you are going through. I had defined myself with the job and it was no longer around. Tough times.
Best of luck, appreciate your videos
Thanks Ken.
Kenneth Watson was
I bet that you could make a nice little dipole using two of those whips. Mount it to a piece of PVC pipe in the field and have a nice rotatable dipole.
Kevin,
Good luck with your job search. I lost my job at age 39 and then got seriously ill. I wish you the best and thanks for all the
videos. I'm going to sign up as patron as soon as possible. Best 73's, Steve
Thanks Steve, every little bit helps.
Very cool idea! Thanks for sharing. I just signed up as a patron because I want the videos to keep coming. Thanks and 73
Thanks for the support, every little bit helps. I've got three video ideas lined up for this coming week.
Great video. Signed up to support you on Patreon. You have an amicable, easy manner. I hope you find something soon in your field. If not, no shame in doing something else - even a McJob - until something rolls in. Good luck.
Thanks for the support! Every little bit helps. I've got a bad back and neck and can't be on my feet for more than about an hour at a time, or I'd be doing convenience store or fast food to get by.
Man that sucks, but you have the right attitude. Getting by=eating. $4/mo is reasonable, and the reason why I like Patreon is that its VOLUNTARY. Not a pay wall-though some use it for that. I'd encourage folks to sign up to your account and donate. Your videos are great, and it's cheap to pitch in to show appreciation. VK3YE sells an ebook for $5. I wonder if you could compile some of your ideas into something like that and try and make a buck that way.
It might tune on 10/11 meter. Fun tool for travel.
In 2002, I had to have a back operation that at least got me back on my feet. I was a bricklayer. So, being a ham I got to building things like your chair side antenna. The big difference was I used a wire wound rheostat. It worked great for QRP! I built a lot of Pixie CW transceivers and they helped me save up for some more parts to build more (and a better outlook on life). Hope you are doing better. I thank God for the skills I have no matter how basic they may be, and they are very basic. My wife is very supportive, too! By the way, she is also a ham. Have fun making the videos and I will enjoy watching them, Greg KA8ZAF
I have been thinking about using one of those wire rheostat's as a variable inductor in a tuner. I imagine there's a bit of loss due to the resistance. But it's still an intriguing idea.
Thanks for the video Kevin, very intuitive indeed. I have one thing to ask you; with the type or should we say rating of the air capacitor you are using in this tuner, up to how many watts do you estimate it will handle? Thanks...
I would like to hear it on 31 meter broadcast.
Kevin,
I'm relatively new to antenna stuff so let me ask if I can connect a random wire directly to your antenna tuner without using an unun in between...
I'm about to build my own and already got several old radio capacitors to start the little project.
Thanks for your inspiration!
55,73
DF7ED
You can, but the impedance can get quite high, making it hard for the tuner to match it. An unun will bring that impedance down to something that's easier to match.
Thanks for the quick reply ! So I will place an unun in between and feed the tuner via coax...
55+73, Erhard
where is the ground plane?
The wire I attach in the video provides a couterpoise to the whip and brings balance to the force. ;-)
Did you ever think of working for MFJ.
next try a 70cm moxon ant u will love it jg kg6mn
Would that tuner work with a large indoor single or multiturn loop antenna for receive only?
Tuners don't really improve the sensitivity of any antenna for receive. At the most, they will attenuate signals that are outside of the range you're tuning to. But you can't get any more signal than the wire is already capturing.
That said, you might be able to reduce interference from broadcast stations if that's a problem.
I have to add this addition, thanks Kevin VK6NJP
It makes the little box all the more handy. How did your smaller version turn out? I've been watching the facebook page for a pic or two.. ;-)
hey Kevin nice and fun invention. I have a couple of question about a radio you show here. can I have an email to write it ? thanks
My email is correct on qrz.com. Or, if you go to my channel page, you can send me a message under the "about" button. You can also send me a message over on the facebook page, facebook.com/kb9rlw