开云体育

Pop, thanks for uploading the photo, I think adding the dual LED is a great idea. I wish I had a case like yours too! :-)) Roy WA0YMH BITX20@...> wrote:

Jack can you share the coding with us please i have a tft at home begging for a vfo :) regards Martin VK6FEEE

Paul, I was going chime in with the same kind of suggestion. Adding in a variable resistor, you could power a simple xmit meter. A relay could be run off of the ptt switch to toggle it between s

In one of my earlier Bitx's I picked up by inducing into a couple of turns on on one of the final transformers/filters rectified it with a 1048 diode and fed it into an led with a resistor.similar to

Jorge, If you measure total current then you will not be able to reduce to zero. If you put a meter only to final stage then the current control will be effective. My board came with ~150mA in the

* Thanks Raj but I can not adjust the 50 mA at rest, something is wrong yes!* * Jorge* 2017-01-04 13:47 GMT-02:00 Raj vu2zap@... [BITX20] < BITX20@...>:

Received the new version. The trifilar toroids are mounted on PCB support formers - nice touch! Board was nicely bubble wrapped. The raduino regulator was bent a little to one side. No other

Mark, Me too, same day, haven't heard a thing. Joel Caulkins KB6QVI

Thanks for your quick response Cor, I will send a mail this evening. 73' Ton PA1PXL

l think the best way is to change the emitter bias. - f BITX20@...> wrote:

You can place a request at hfsignals.gmail.com. Mention the serial number of your BITX40 and you will probably get a notification to pay 14$ via Paypal. At least that worked for me. Cor

I have just ordered one by emailing hfsignals(at)gmail.com. earlier emails to the shorter form hfsigs@... went unanswered. $14 USD. Bill, VK7MX

After all we have? band pass filter and crystal filter (for LSB /USB) after the mixer to take care of unwanted. we also have a Low pass filter to cut off harmonics possibly created by Lin PA. Best of

please go through Wiki https://en.wikipedia.org/wiki/2N2222 https://en.wikipedia.org/wiki/2N3904 https://en.wikipedia.org/wiki/BC548 As Ft is 300 Mhz maximum gain possible is 300/7=43 the same gain

As one of the earlier owner of this nice BITX40, i have the analoge version while DDS was not available at that time. Now i wonder if one can order the DDS to complete the BITX40. If yes, how??

Just another thing to keep in mind, with the stock vfo 4.8 to 5.00 MHz, 30 times the vfo frequency will produce birdies in the 2 metre band, a case for using a metal enclosure, pardon the pun. Alf

Hi all I have to add some comments here. 1) You cannot see or measure phase noise on an oscilloscope. You cannot even see or certainly, not accurately measure, phase noise on a spectrum analyser,

That is nice looking case, Pop. Can you advise as to its source. 73 Bill, VK7MX

Jerry, My Q13 is running uncomfortably hot. The static dissipation without RF is greater than the rated 225mW. Farhan is aware of this and a change of one or two resistors are in order. Cheers Raj

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /LED for BITX.jpg Uploaded by : vu2pop