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Re: LOW tx output1.4 volt
Dear farhan After replacing Mic i am able to get 1.5 at 100 preset. But still power out put is below 4 watt. Driver transistor DC voltage ground to emitter 440 mv Ground to base 1.2 volt
By Soundararajan Ra. · #18788 ·
Re: My BITX 40 inside and out.
Looks good!
By KC8WBK · #18787 ·
Re: My BITX 40 inside and out.
Looks great Sent from my iPhone
By Art Olson · #18786 ·
My BITX 40 inside and out.
My BITX 40 rig ; https://drive.google.com/open?id= 0BxhCZcD4rmSEV3A2dHFHSXk1eTA https://drive.google.com/open?id=0BxhCZcD4rmSERm9rY19RcG9Fd2c I bought a commercial enclosure, and re-used a mic from
By Baruch Atta <baruchatta@...> · #18785 ·
Bitx40v3 SMD ver question
Ashhar purchased a bitx40v3 (smd version). Ordered the DDS vfo fro qrp labs and waiting for it to arrive. I have a FLL Freq Counter Sunil. I think I can use this until the QRP-labs version arrive but
By Art Olson · #18784 ·
Re: Broken URL on hfsigs.com
The correct page for HFSigs BITX40v3 is at: http://www.hfsigs.com/ The URL for the original BITX20 design by Farhan is: http://www.phonestack.com/farhan/bitx.html _._ BITX20@...>
By Arv Evans · #18783 ·
Re: Bitx40 BPF
Thank you Ashhar. 73 Ken <BITX20@...> wrote:
By Ken · #18782 ·
Re: Bitx40 BPF
It is centered on 7.2 MHz. It is 500 Khz wide - f BITX20@...> wrote:
By Ashhar Farhan · #18781 ·
Re: Success with BITX
Hi Baruch, I did the same thing for my microphone, and I'm glad you received a good report on your transmit audio. I was using my SW receiver (with SSB capability) to monitor my transmit audio. Just
By Mike Haynes <mike.haynes08@...> · #18780 ·
Re: LOW tx output1.4 volt
Dear farhan After replacing Mic i am able to get 1.5 at 100 preset. But still power out put is below 4 watt. Driver transistor DC voltage ground to emitter 440 mv Ground to base 1.2 volt Emitter to
By Soundararajan Ra. · #18779 ·
Broken URL on hfsigs.com
The Circuit Description page has a broken link. Instead of: http://www.phonestack.com/farhan/bitx20.html It should be without the 20: http://www.phonestack.com/farhan/bitx.html
By Daniel Morgan · #18778 ·
Bitx40 BPF
Hi Ashhar What is the centre frequency and bandwidth of the BPF? 73 Ken VA3ABN
By Ken · #18775 ·
Bitx40 BPF
Hi Ashhar What is the centre frequency and bandwidth of the BPF? 73 Ken VA3ABN
By Ken · #18776 ·
Success with BITX
I am happy to report that I have successfully completed my BITX 40 v3 project. The board is securely installed in a nice enclosure. I used a commercial enclosure, $20, steel and aluminum. I
By Baruch Atta <baruchatta@...> · #18777 ·
Re: Bitx40 #861 arrived
Thank you. It was me. From the photo it seems like 10 turns yes. But the output transformer close to the IRF510 and the LP filter, is it also 10 turns (usually it is 3, I think). Thanks. Roy
By rjinspace · #18774 ·
Re: Toroids Loose on Arrival
yep, that's pretty much what mine looked like, a bit loose and a bit scramble wound jerry aa1of/6
By ohwenzelph · #18773 ·
Re: Bitx 40 board.
Thank you! Sent: Tuesday, November 29, 2016 1:26 AM To: BITX20@... Subject: RE: [BITX20] Bitx 40 board. Mark, This is the official bitx40 hack
By Mark W <k3mrk1@...> · #18772 ·
Re: Toroids Loose on Arrival
Hi Joel, Thanks a lot for that. I've seen that others have had issues, wasn't sure though. I'll try the nail polish trick since I don't have anything else handy. Looks like I have an antenna to
By Ryan Flowers · #18771 ·
My Build progress
I just updated my blog with the progress I have made on building my BITX 40 board. Except for a little drift that I am still working on, the receiver portion is working quite well. Next to check the
By DuWayne Schmidlkofer · #18770 ·
Re: Bitx 40
I just wanted to thank everyone for the help. My problem turned out to be the 9 volt regulator. I probably dragged a screwdriver across it while dinking
By Bill Robbins <wrobbins@...> · #18769 ·