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Please use the site for ordering -- David ?N8DAH Kit-Projects.com ( http://www.kit-projects.com ) Shop is open! ( Https://Shop.Kit-Projects.com )

CW kits are in but in limited supply, I do have more on the way to cover further demand. ?73 ?? -- David ?N8DAH Kit-Projects.com ( http://www.kit-projects.com ) Shop is open! (

I don't see a post yet that clearly spells out how to take care of the spurs. This should include pointers to specific parts, show how they get mounted to the board, include fixes for both the

Respectfully, the point of being a ham is to learn about electronics and RF.? The point of the BITX radios is that we have a base radio to mod and explore and learn from/with.? Toroids are really

I think there was brief mention by somebody in early 2017 about that spur getting transmitted now that Brian has jogged my memory.? But mentioned only once more or less in passing, and then it was

Have you seen QST’s review of the BitX40? Seemed to pass their analysis.? I think that was with an unmodded radio.? Guy WB7SZI

Mindlessly twiddling RV1 on the Bitx40 (or RV2 and RV3 on the uBitx) will blow the IRF510's. I assume you were watching IRF510 drain current when you did the adjustment.. If not: Power down, turn that

Sean do check to make sure you don't have a short on the antenna connection.? tuning around one or more bands - do you find evidence of signals that you can tune in?? this would be a BFO that is

My SDR shows my BITX40 signal looking more like AM. Has the carrier and USB when it should not. The USB does look weaker than the LSB that's actually supposed to be there, but still way too strong.

Jerry, I agree with what you have written and detailed. The transmit spur varies with frequency. Away from 7.2MHz it is outside of the band. Feeding the Raduino into the disabled vfo is not optimal as

No apology necessary, David. I just need to use my eyes the way they were meant to be used. Link showed up fine. - Rich

Just took my relays off in 20 minutes using a ECG J-045-DS Electric Corded De-Soldering Iron, 420 Degree C Tip Temperature, 45W From Amazon. Didn’t even need to clean the holes 73 Art

I've used the GC Electronics 12-2157 desoldering tool for a number of rework jobs, and it's always worked very well. I have not yet desoldered the relays on my v3 uBITX, perhaps this weekend if some

Using a toothpick to open the holes is a great idea.? -- Lee - N9LO?"I Void Warranties"

Link?

Regarding the Bitx40 spur, I previously wrote: It's possible that a low pass filter on the VFO is sufficient, allowing through 4.8mhz but not the harmonic at 19.2 mhz.? However, the diode ring mixer

There is a way in which the Bitx40 can produce a spur, as Brian reports. Look over the last few posts in this thread: ? ??/g/BITX20/message/21998 The thread has to do with images

In Europe the birdey on 7.2Mhz is a nice end of band signal? Rob

It was a? very easy swap with the relays. They came to me im Europe from Alibaba in 3 weeks 18$ for 10. 5 for my friend. Taking the old ones out with normal solder pump. Just one of the old relays

Don't say that John. It was never our intention to spam him. Perhaps he is impatient that Ashar Farhan did not reply to his query, but all others. After all he is also like all of us. I was dam