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Mornin' Ken: You're right, and I may have glossed over this idea too quickly. This might be a great way to get them to try at low expense and without insulting their fabrication abilities. I do have

Band (filter) switching would require some IO pins to drive relays. Unfortunately there's only one free IO pin left: pin A2 (previously used for calibration). With just one IO pin we could only switch

Hi, I tried the uBITX with FT-8 on 20m, and I could easily hit 5W out and probably higher.? I've observed that typical SSB usage doesn't come close to CW output power, but the signals coming out of

The simple way to do this is to do what Hans did on the 5W PA he produces at QRP-Labs…. There is a second set of pads on the PCB that has the right pinout for the RDxx devices. That way you can

This may be a futile attempt if the intermediate gain stages (pre-driver and drivers) fall off with frequency too. I have not done this myself yet… still on my list… to actually publish a table

I'm using V2.03 on my bitx40 with great results. With all the nice features, I was thinking about adding an extra band or two or even more to the rig.? Would it be feasible to add multi band options

I ordered mine 31dec mine will come with the easter bunny hopefully with more up to date software been as the first run was betas chris

Thanks all. I'm not looking to stun pigeons, but it would be nice to have 5 watts on 30, 20 and higher if the solar activity ever picks up. There is also a RD16HVF1 discussion in the "irf520 vs

I ordered my 2nd one on 23 December, 2017 and I received information from HF Signals that it would be in about 2 weeks before it shipped and they apologized for the delay. As fast as the pre-orders

Hello Jack, W8TEE, The SMD components are not the only thing that you might need. Also look into: Solder paste in a syringe with application needles (~ $20+ for 35gm) Toaster Oven or Electric Skillet

Allard Thanks 73 Dave G8PGO

William Maxwell—Aha!! Thanks, now I understand. 73, Sent from my iPhone

Hi, This is normal, when both of them have has used the same arduino pins: A4 and A5. Need short cables, and also You might to use SPI interface for display and I2C for Si5351.(It's easy to convert

Yes, as per my first (top) post - late on 13th Dec 2017 Nigel

I ordered mine december 12th. I received it as 009/2 in France on january 19th. Cor - PA4

Farhan I know it will increase the price, but how about switching over to the RD16HVF1 which would allow the rig to run from 12V doing away with those wanting more power to increase the voltage to the

Alex when you have your modifications all done can you please post it on here I am interested in doing mine when I get it chris

Bob, Yes, I've seen similar behaviour on my homebrew uBitx. Increasing the drive will overload the PA at 80 meters but will hardly increase the power output at the high bands. I even made a change in

IIRC this is the place where I bought SMD parts some time ago. They still have the day planner hole pattern. I find that very convenient. I put the resistors and caps in one binder and whenever I

Selling my BITX40 to raise sheckles for another rig. The unit operates perfectly, and gets good reports from the Noon-Time Net here in the Pacific Northwest. Equipped with the Baofeng speaker-mic,