Extremely interesting two tubes 80M band transceiver in a handy box. I always enjoy what you have created. I hope to make a CW QSO with you using my classic transceiver when the propagation is right. Thanks for sharing with the world on your excellent achievement....VA7VB
Only two tubes, and full break-in operation! Plus 600-Hz offset and side-tone -absolutely fantastic! I must now build one for 40-Meters :-) Thank you Helge ! -KK7JD-
Simply brilliant, I loved the way to generate the beat signal on RX using the same crystal as to generate the carrier on TX. And all in a tiny box. a fascinating experiment 73 of EA1FLL 👍
Congratulations! I am very happy to watch this homebrew two tubes transceiver making the first successful QSO and the extremely satisfaction smiles that you exhibit after the QSO. I assume that you are extremely happy and satisfied. Great job...James VA7VB
Wonderful creation! I used to sit and observe my HAM neighbour as a young boy . He was kind enough to allow me to listen and observe . He was a U.S. Army Retired Colonel who was General MacArthur's Communication Officer. He was teaching me Morse Code when he died in 1966. Your videos have awakened an interest in radio and HAM devices that I've not had for almost 60 years. Thank you!
Very nice little transceiver, amazing. Kind of a tube version of a Pixie 😊. How high is the supply voltage, I can’t find that info in the video or on your website.
Hello dear OM the Reception part works very well now please give me the diameter of the RF coil for the Transmission part and the number of turns Thank you again 73 jean-jacques F6ggz
Thank you dear OM for your answer one last question please for the coil of the EL90 if possible the number of turns and diameter of the coil many thanks 73 qro jean-jacques F6ggz
Thanks for the comment. I haven't really counted the number of windings. I have measured the value in an inductance meter. It should be approx. 22uH. But you also need to measure the resonant frequency.
The transformer had to be extremely small. That's why I used a microphone transformer. It has a low-impedance input and a high-impedance output. I connect it so that the high Z side connects to the anode. The output should only drive an earphone or a line input.
Fin video Helge -og et interessant prosjekt. Når jeg ser på skjemaet så er det en ting som kan forbedres: du legger inn en kondensator mellom volumkontroll og gitter på første rør, og en fast motstand mellom gitter og jord. På den måten vil arbeidsbetingelsene for røret være uavhengig av volumkontroll. 73 de Asbjørn, 5MT.
Takk for kommentaren. Bra forslag. Hadde vært bedre ja. Men kansje enda bedre er å ha volumet i anodekretsen? Da vil jeg muligens få høyer Q i inngangskretsen.
hello dear om i am interested in the assembly of your 2 tubes transceiver can you give me the number of turns for the coil of the ek90 tube and the 6aq5 a big thank you 73 qro jean-jacques f6ggz
Extremely interesting two tubes 80M band transceiver in a handy box. I always enjoy what you have created. I hope to make a CW QSO with you using my classic transceiver when the propagation is right. Thanks for sharing with the world on your excellent achievement....VA7VB
Only two tubes, and full break-in operation! Plus 600-Hz offset and side-tone -absolutely fantastic! I must now build one for 40-Meters :-) Thank you Helge ! -KK7JD-
This was interesting to hear.
Feel free to send information about how your project is going.
Ok, this is awesome! I thought your separate tx and rx videos were good, but this is another level. Thanks so much for sharing 👍
No, I didn't think it was possible, but the ideas came as I started building.
Very interesting concept! Your videos are always excellent. Please continue to share your work with vintage German equipment!
Helge.. every time I come back to your channel, you did something new amazing. this is a so elegant solution .. I am really impressed
keep it up! These miniature tube projects are really fun!
Simply brilliant, I loved the way to generate the beat signal on RX using the same crystal as to generate the carrier on TX. And all in a tiny box. a fascinating experiment
73 of EA1FLL 👍
Congratulations! I am very happy to watch this homebrew two tubes transceiver making the first successful QSO and the extremely satisfaction smiles that you exhibit after the QSO. I assume that you are extremely happy and satisfied. Great job...James VA7VB
Nice little rig! I want to make one too😀
simply amazing, I would love to build on...I only lack in the electronic component experience...fantastic!
Thanks for all your nice comments on my videos.
Wonderful creation! I used to sit and observe my HAM neighbour as a young boy . He was kind enough to allow me to listen and observe . He was a U.S. Army Retired Colonel who was General MacArthur's Communication Officer. He was teaching me Morse Code when he died in 1966. Your videos have awakened an interest in radio and HAM devices that I've not had for almost 60 years. Thank you!
Great project. Super, You are big men.
Nice work.
Excellent job Helge....hpe to see you on the air for QSO 73
This vacuum tube technology could survive from being obsolete in the 21st century. Especially from a tin lozenge box.
Thanks
Excellent Job.... 💯👌
Very nice little transceiver, amazing. Kind of a tube version of a Pixie 😊.
How high is the supply voltage, I can’t find that info in the video or on your website.
Thanks for the comment. :-) Heating is 12 VDC and HT is 250 VDC.
Thx u
Hello dear OM the Reception part works very well now please give me the diameter of the RF coil for the Transmission part and the number of turns Thank you again 73 jean-jacques F6ggz
Beautiful. W5NU
This is cool would be fun to play with on the air. I wander if it can operate at higher frequencies like 17m
It can also operate at higher frequencies by replacing the coils. Maybe it will be a challenge to find crystals?
Thank you dear OM for your answer one last question please for the coil of the EL90 if possible the number of turns and diameter of the coil many thanks 73 qro jean-jacques F6ggz
Thanks for the comment.
I haven't really counted the number of windings.
I have measured the value in an inductance meter.
It should be approx. 22uH.
But you also need to measure the resonant frequency.
perfect..
Så morsomt og vellykket prosjekt - artig. Gratulerer med et så bra resultat i et så liten boks :-) Hvor har du kjøpt disse boksene ? 73 de LA1HU
👍
Hi, something more about output audio transformer? Size/source
The transformer had to be extremely small.
That's why I used a microphone transformer.
It has a low-impedance input and a high-impedance output.
I connect it so that the high Z side connects to the anode.
The output should only drive an earphone or a line input.
Fin video Helge -og et interessant prosjekt. Når jeg ser på skjemaet så er det en ting som kan forbedres: du legger inn en kondensator mellom volumkontroll og gitter på første rør, og en fast motstand mellom gitter og jord. På den måten vil arbeidsbetingelsene for røret være uavhengig av volumkontroll. 73 de Asbjørn, 5MT.
Takk for kommentaren.
Bra forslag. Hadde vært bedre ja.
Men kansje enda bedre er å ha volumet i anodekretsen?
Da vil jeg muligens få høyer Q i inngangskretsen.
hello dear om i am interested in the assembly of your 2 tubes transceiver can you give me the number of turns for the coil of the ek90 tube and the 6aq5 a big thank you 73 qro jean-jacques f6ggz
Thanks for the comment.
I haven't counted how many there will be.
But I measure the value in uH.
About. It should be 22 uH.
Amazing.....73 IW0RZU
Utrolig kult! 73 de LB7WJ
Minimal Art Session, :-), tnx, de SP2LNY