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That sounds like a broken mike connector. Since it receives, the si5351 on the Raduino is doing everything it needs to on transmit. When the Bitx40 transmits, it switches off power to the receiver

The AQRP Vector Impedance Analyzer, kit #25 towards the bottom of this webpage: ? ??https://www.qsl.net/k5bcq/Kits/Kits.html does something similar, but at audio frequencies.? K5BCQ also did the

Bitx40 - was working, but now does not transmit audio. The device was working well with many QSOs on 40m. All of a sudden it does not transmitt any audio. Receiving is excellent. To test or trouble

jerry, first, thanks. there is substantially your code in there. second, onto the circuit. it uses two clocks. not three. the third is a spare output. more on that later. the circuit here uses a

Jerry, I remember Farhan mentioning that the clock out of the Si chip is not clean and will cause wrong readings due to harmonics. To solve this, mix down and pass through a filter and then take the

My ADE-1 document just says that pins 1,4,5 are all ground,? 3 is RF, 6 is LO, and 2 is IF. out. Your schematic suggests that 4 is only the "ground" for the RF port, and is not connected to the other

Hmm. Someday, you will have to tell us how it works. "works on hetrodyne principle" does not quite do it. Nor does digging around in your code. That thing isn't on the HF bands, is it? Curious that it

I gratefully acknowledge the latest sch and firmware, Fahan jee, I had a golden opportunity to hear the circuit explanation during the 9th Dec 2018 eyeball meet of *Lamakan amateur radio club* direct

I fear , whether the hmi files there in may not fill in 3.2 and 3.5 displays, even though ewe can see the screens as reduced to 2.8 on a bigger screen. regards sarma vu3zmv

As I recall, Kees was using EasyEDA. They have an easy to use tool chain for schematics and gerbers. Also a very reasonably priced fab service to build the boards. Jerry

The AGC and PopFix kits are no longer being sold by Kees. He had a run of nearly 1000 of each, and has moved on to other things. But there still seems to be plenty of need for those boards. Hopefully

peeps, while trying to measure the swr on the cubesats, i figured i couldnt use any of the analyzers i had access to. they were simply too big to be stuffed inside a 10 cm cube. my simple resistive

I've seen that in the flesh and it is impressive. Andy worked with a blind ham to make it work well?and be easily used.? The base machine is Raduino with add ons and the whole of its is available

Correction: The QCX CW Transceiver does not have CAT control. The QSX SSB/CW/PSK31/... Transceiver will. The KB1OIQ hacks for the uBitx pointed to by my first link ?

Kb1oiq on April 14 describes mods he made for a visually impaired ham. Look up his message here for info. Curt

Don't have a QCX, so can't compare the two except to say the QCX does not do SSB. The QSX should come out someday, and will do CW and SSB, and a bunch more. Downside is that the firmware of the

I am looking at options for a 40M qrp radio for a mostly blind ham. He would like to have SSB and CW if possible. Ease of use is paramount.? He has looked at the qcx40. How does the bitx40 compare?

Should not be any need to remove L8 and C160 when going around the LPF. I'd just put that 3W 51 ohm resistor across C160, nothing on the antenna connector,, see how quickly it gets hot

You should be adjusting the quiescent drain current through the IRF510 for 100ma or so (with PTT pressed so it is trying to transmit). Did you succeed at this?? No RF need be generated when doing

Try this site: https://ubitx.net/2018/07/16/nextion-3-2-and-3-5-display-firmware/ 73 Evan AC9TU