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I am successfully using it with FT8. Using a raspberry pi and wsjt-x. I made PTT with a USB to serial adapter and made a circuit for the RTS signal. Had a little problem because there was some sort of

A diode is a good start. ? But Q13 and R141 can exceed dissipation limits even when running at 12v, If running off a fully charged lead-acid battery at 14v you will be severely stressing those parts.

Has anyone success in using the BitX 40 for JT-65? Ted WD4CAV

Jerry has some good ideas but the easiest solution to clipping is to slightly increase the drain voltage. Assuming the same drive level. Most likely, clipping will occur on the higher frequency peaks

The rig draws around 150ma, so regulating down from 24 to 12v that 7812 would be dissipating 2 Watts. Could be made to work, but will need a heat sink. ?I'd go with two supplies. Or maybe a boost

You're welcome, Brent. My anti-chunk (eventually) was an adaptation of I7SWX's. All-transistor. FETs are not essential for that - might be for AGC, but haven't got to that yet. Might even be able to

OK gang I want to try to run the PA off 24 volts. Any suggestions as to size or type of heatsink. Do I have to re-adjust the bias, etc? I was wondering if anyone has used a 7812 to regulate power to

Thanks Dex Looks easy enough. That's what I love about this radio, it's inexpensive enough that you don't mind experimenting. I built the anti chunk circuit shown elsewhere here, that uses a 2n3906 to

I had mine in 4 days with India post much better than dhl and no extra bills for tax chris G0WFH

I got my Bitx40 kit in the 10 days from India to the Caribbean, got it a couple days ago. Need to assess which housing to use b4 building -- AncelB, MIT EE6002

You will get a shipping confirmation from DHL takes a couple of weeks for that to show up in your email. I paid with Paypal <gpodave@...> wrote:

No, Brent, no AGC yet (no Raduino yet- it's en route), but Yes - lift R111(restores proper power switching to Q16) and 1N400x +12 (nearest I found was at R101, nearer end) to U1 pin 6. No ill effects

I agree Mac, I usually expect a couple of days before anything ships and then the shipping time in addition to that. So I really have no worries with this order.? Glad to see Dave got some info on

Thanks guys, I've just had a notification and tracking number.? My BtX is in Frankfurt :-) 73 Dave (G8XUL)

I think,there is no serious problem. 29-1st oct it was weekend. Somebody has to check order, pack TRX, send it. It is nor a big proffesional shop neither factory. Sometimes there is no "one day -

Pat,? thanks.? Good to know I'm not the only one (sorry that's at your expense :-).? If that's the case fine.? I know that this is a hobby and a very good price so an 'out of office' reply would

I don't know that it's normal, but you're not alone. I placed my order on 1 October and haven't heard anything yet either. No additional info in my paypal transaction either.? Perhaps someone was

Brent, thanks for taking the time to reply.? That gives me some useful info - nothing in the paypal records however. 73 Dave, G8XUL

I concur. I did some research on these things a little while ago. The AC ones use triacs, and they won't work with DC. Some of them won't even work properly with an inductive AC load. I'm guessing

Should be power connection.? Arrrr, I hate how unnoticed auto correct makes me look illiterate.