7 MHz CW QRP portable with a transistor radio: Can it work?
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- Опубликовано: 9 мар 2021
- Here I go portable with the 2 transistor 5 watt QRP transmitter featured in the previous video plus a 1970s era Panasonic portable AM/FM/SW radio that tunes 7 MHz. The transmitter's oscillator runs continuously as a BFO for the AM-only receiver. Does it work? Can I get contacts? Watch and find out!
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Peter, it was a pleasure to QSO with you in real life.
Sadly I couldn’t remember the Q code for fan boy :-)
Confirming you were 559 with some QSB at the start then jumped to a solid 579 for the rest of the time I heard you on air. That was to Sydney’s Inner West, so not too far from the city or the airport.
Re the rig and setup
I was working battery portable on the kitchen bench after fixing an issue with the transmitter earlier in the day. Testing it out and listening in while prepping for an early dinner
Rig was a Xiegu X108G, then running 4W, capable of 18-20W
Test was at 2W and 0.5W, the lowest setting, before returning to 5W
Antenna is 33 odd feet of vertical drawn aluminium tube tied to the back fence, with a 1.2m helical whip I made for 40m screwed to the top that acts a kind of trap extension for 40m
Matching is a multi tap transformer box I made with an FT240-43 with switchable 2-14 bifilar turns on both feed side and the antenna side
Ground is simply a Bunnings ground stake....stuck in the ground.
Key was my little BEC mini field straight key I bought off eBay from a dude in Greece.
Been at this CW thing for just on 12 months, now, so thanks for your patience with my drunken chicken pecking keying and missed bits you repeated.
We should have tried with my one of my son’s Pixie kits he built when he was 9, if I had known you had 7023. Still a freshly repaired rig, with a mod I’ve done for digital audio and home brew antenna and match must still count for some _Real Ham™️_ points for the QSO :-)
Peter, it was a pleasure, and a thrill to QSO to yourself on such minimalist home brew equipment. I’ll keep an ear out for you again.
73s de VK2NAP
dit dit
Ps. After our QSO, I did _spot_ you on the SKCC Sked Page, but sadly, the few there from France and the US couldn’t hear you.
Thanks Chris. It would be interesting to try the Pixie. I'm sure I'd be able to hear it. I'd start on a better receiver though. The operating location is just past the end of my street so it's easy to reach and low noise. Maybe we could tee up an afternoon?
@@vk3ye for sure Peter.
I’d love to try the $10 QSO challenge. To have a QSO with equipment that has cost less than $10.00.
I’ve had the idea for a while ever since seeing the Pixie
You have $10 to spend to build a transceiver and matched antenna to get on the air.
Power, headphones or speaker, or postage charges don’t count towards the $10, but the transmitter, receiver antenna and match do. You’re allowed to _curb side shop_ for stuff in council pickups, or have stuff given to you that would be thrown out or scrapped.
Parts from your junk box are valued at the lowest published price you can find online. Half that if parts were “reclaimed”
Jury is out for whether the keyer should or shouldn’t be included. I’m 50/50 on that as I love my mini BEC leg strap field key. Sadly, it didn’t come with the leg strap, but I use it on the table anyway so no matter...
I’ll shoot you an email with my contact details.
Thanks again for the fun QSO
73s de VK2NAP
dit dit
QFB?
@@gsansoucie QFB ??? Runway lights out ??
Great wee video a really good demonstration of improvised QPR in ad hoc application , excellent work with the contact, it sounded busy.
Truly: Who wants to work on the air is looking for ways. Who does not want to look for reasons. Thank you so much for your video.
Always awesome. After Marconi's experiments, Peter's experiments are the right way to follow.
Thank you Peter for your stimulating's experiments.
Excellent stuff Peter, enjoyed the video. A great demonstration of what can be done with a simple station and making QSO's on a small budget.
Outstanding rig and equipement! Remembers me of Donald Sutherland "In the eye of the needle". Vy73 HB9DHH
Brother, I don't think anything could keep you off the air. If the shtf, you could communicate. Well done and you are an inspiration for many. Very good results. Thumbs up and subscribed.
Thank you and God bless.
Great video, showing what can be done with simple equipment
Awesome stuff peter big thumbs up 👍
What an interesting concept and I love the use of the S meter for matching! Take care my friend 73 de KC3NHE!
Very cool dude👍
Another Great Video there Peter...brings back mems 73 de VK4LA
Really cool! True ham radio!
Great pie shop in Yackandandah (Gumtree Pies).
👍😍Nice video
You should try steampunk as second hobby. Your builds would be awsome. Nice video (as the most :P) , ty.
True ham radio! Verdadeiro radioamdorismo! 73
Позитивное видео, молодчина!Супер!73!
Amazing videos but why seems like recorded in early 90s ?
Seat of the pants with terrific tech skills. Impressive id say. KE5TJ
Only another crazy ham can appreciate this.lol. 73 WA6MOW
I have the very same radio Peter.73 G7HFS
Can't zero beat, have to tune high to transmit?
😉👍👍👍👍👌
Is it safe working with 5w so close to a receiver on the same frequency? Wouldn't it get damaged without some kind of T/R switch?
It didn't blow up my receiver. Other gear may not be so robust.
@bd139 How should the diodes be connected?
haha ha this is fun 😀
同じ事考えてる局長がいた。
Radio
73 YD2BVE