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Digital-only QRP transceivers (lemmy.sdf.org)

submitted 10 months ago by [email protected] to c/[email protected]

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I'm really intrigued by digital modes. Stuff like JS8Call seems really cool, and I want to get into it.

I don't have any HF equipment. SSB isn't very interesting to me, so I was thinking of getting a digital-only transceiver and saving some money. I think it would be cool to take a small QRP box with a laptop or raspi, and do digital mode Pota with it.

I've seen the QDX which looks exactly like what I want and seems to get good reviews. Any others that I should be aware of?

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[–] [email protected] 1 points 9 months ago (2 children)

I just posted this in another thread.

I’m just staring to build a T41 SDR QRP Transceiver

SDR = Software Defined Radio, 
QRP is the Q code for reduce power, QRP radios are meant for low power operations.

Not sure if you want to go down the kit route but it will teach you a bit about RF (Radio Frequency) theory and practical electronics (If you don’t already know). It’s also very modular and there are other options for the RF amplifier section so it does not have to be QRP, there is a 20W and 100W board available as well.

Be warned that this kit will take a lot of time, reading, careful soldering of tiny SMD (Surface mount devices) components, etc. There is a good book about the kit, the theory, programming the Tensy (the microcontroller heart of the t41), etc.

http://4sqrp.com/T41main.php

https://www.amazon.com/Software-Defined-Radio-Transceiver-Construction/dp/B09WYP1ST8

Note: I know most in this community will know the acronyms, I spell them out for others that may happen by

[–] [email protected] 0 points 9 months ago (1 children)

@AbidingOhmsLaw @OneCardboardBox Where can I find info about the 100W board ?

[–] [email protected] 1 points 9 months ago* (last edited 9 months ago)

That board was designed by K9HZ, you can find the info in this group

SoftwareControlledHamRadio https://groups.io/g/SoftwareControlledHamRadio