Hello everyone! Raj, talking about rejected boards, got me thinking: Can we buy the rejected boards at a discounted price? For people like me, with not a lot of resources but enough time (retired) wou

Nothing at all Tom. I could hear Willy talking to you and heard him saying your call sign, but nothing from you. too close. Can you hear me at all?

Just finished first But to BITX QSO with Bruce KC1FSZ. Very bad conditions at my QTH. Lots of QRN.

Hi Bill, Very happy to have my first QSO Bitx to Bitx. I know my report was 33. Your signal was better, at about 36. Anyway my callsign is VA3NOI. My fellow Canadian VA3NFI does not own a Bitx40. Than

Michael, You should also consider the fact that most dynamic microphones output a much lower signal so you will need more gain in the microphone's amplifier.

Could hear KC8WKB calling CQ, but the two Spanish speaking QSOs going on on 7.180 and 7.175 made the communication impossible. 73

Listening right now and 7.178 MHz is better, or even better 7.1775MHz. There is a strong station working on 7.180MHz and another one on 7.175MHz

If you use the LC VFO you should have at least 10V at PWR port. When using the Raduino as VFO you probably can drop another volt, to 9V, before the sensitivity of the receiver starts dropping. Under 6

Jerry, We use them for business too. Their quality is very good. They have 24h service and you add DHL to that. For that there is a price to pay, but, in the office, we don't care about that.

I use PCBWAY. I did a quick quote for a board the size of BitX and it works at $62/5 boards sipped to Canada by DHL. I use them for all my boards needs as they have a regular price of $10/10 boards no

Marc, If you want to stick with Raduino as a VFO remove C91 and C92. They are not required. Now for any frequency below 10MHz you should use LSB and your VFO shall generate 2MHz to 8.6 MHz for a cover

@Tim You don't need C91 and C92 if you use the Raduino. They are a part of the analog VFO originally designed. As long as you use Raduino you can take them out for good. The change from USB to LSB can

Hi Craig! I did not try 24 V as I do not have a power supply that goes as high. I tried 19.6 V from Li battery pack for power tools and when transmitting I get about 1.8 A current draw and about 15 W

Only Q7 works as an amplifier. Q8 and Q9 are emitter followers, so no gain there.

Oh, sorry, I don't remember that topic. Ion VA3NOI

Strange language for a college professor, don't you think, Simon?

I would try to lower the drive using R136 not lower the voltage.

It looks like you had a short between +12 and GND. A fuse will help with fire, but it will not protect the electronics. If you have a stable 5V at the output and can adjust the frequency you have a go

Can you post a picture indicating where the smoke comes out and which trace has been blown? That part is a voltage regulator that includes current limitation, so I do not think you have a short on the

Volume Pot, no switch Tuning Pot Both are same dimension, same look. Tayda is really good as a general parts store and ship quite fast. 73, Ion VA3NOI