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Bill, Here is link to the TVS diodes, https://www.digikey.com/en/products/detail/bourns-inc/CDSOD323-T08C/3742081 Joel N6ALT

Hey Bill, One other thing I forgot to mention, you will have to move your Raspberry Pi over from the V2 board to the V3 board but that's easy, just four screws, also make sure to install the SD card

tnx Joel , that sound like my plan... ? ? what are the specs on the diodes used for clamping..???? -- link to my QRZ listing https://www.qrz.com/db/ny9h

Hi Bill, To answer your question, just take the V2 board out and install the V3 board in it's place. They are basically identical boards, the V3 board having IRF510s for finals instead of the

Gyula, good catch! I do have XT65s, I've just labeled them incorrectly in the schematic. But you are right in that I have them flipped, that's a quick fix.

expecting a board ( to get current ) ..... got tired of having to pay attention to all the conversations on mods.... guess I'm 50% appliance operator & DXer. so you have any hints? , should be

It would be interesting to incorporate a small UHF antenna directly into the sBitx, when and if it will support the band. With a dedicated antenna socket, it could offer "off band" communications to

sorry if already suggested, I guess I should have read the previous threads before...

Well, you just need four contacts, but I see your point.

Jeff, I know this connector as XT60, but that's a minor problem. The bigger one is that there is a 10A fuse at the input that connects to the radio, while it can be seen on the opposite side in the

If you are going to operate UHF or higher, you might be interested in a satellite tracking program.? GPREDICT is available for Windows or Linux on x86 processors.? I don't know about the Pi or

Looks pretty nice to me!!! Gordon KX4Z [email protected]> wrote:

So here's the latest. My thought is that this would more or less replace the existing plug on the radio. Can't really do that inside the radio without a lot of effort. Here you would just plug in

Minus seven for the pre-release QC fail.? The page lives in an open tab. I'll add that the more about amplifiers I understand, the more fun they're becoming. Fun is good! 73

Farhan, Your feedback amp page lives in a tan on my phone that's been open for more than a year now. Truly - thank you for the vid and calculator. Thank you for your observations - I will add them

Terminations as farhan says is important! Also Rf (feedback resistors) vs bias... Sometimes that resistor can be juggled to be the bias value.? Often its too low for that so series resistance

Andy, It is a pleasant surprise that you sat through it all! These amplifiers need 'strong' terminations at both ends. If two amps cascade, this is usually lost. A trick is to add a 6dB attenuator

Farhan - it's still an excellent video and calculator - thank you! Are there any rules of thumb about selecting the isolation resistor for the power input? I've seen from 10 to 220 Ohms. Is it

Would the keyer ever be able to handle the Ultimatic Mode rather than Iambic Mode. Or will I have to use my external ?keyer if I want the Ultimatic Mode?

Andy, if you have already brought up the topic here, I will answer here, although the title of the topic does not indicate this. I, who am only a radio user and cannot code, am told by others that it