Most affordable UHD compatible SW transmitter

GNU Radio
1

Hi people,
Do you know which is the current state of art regarding (low) price of
SW SDR
transmitter compatible with UHD?
It’s for a project for Digital Radio broadcast using DRM standard (10kHz
of
bandwidth) here in Brazil.

Best regards,
Rafael D.

2

B200 is the lowest cost.

3

Thanks Matt!
But the B200 frequency range is 70 MHz - 6GHz, so it does not cover the
SW band.
I have an USRP 1 and some daughterboards, but I was thinking about
something
even more affordable, that could work with UHD. Something closer to what
hams use
for SW.

Best regards,
Rafael D.

4

Sounds like a B200 + a cheap downconverter, maybe based off something
like the classical NE602/SA612 IC, plus a bit of analog RC filtering.

You will probably want external analog hardware, anyway, because the
USRPs don’t typically generate enough power for long-range broadcasts –
heck, India has a 1MW transmitter. So your system would look like:

B200->mixer incl. sufficient filtering->PA->antenna

Greetings,
Marcus

5

Thank you all people.
We’ll study more about the topic and decide which solution gives us
better
results / cleaner signal.
I was asking for UHD compatibility as the software we use to broadcast
DRM
(Spark) is compatible with UHD.

Best regards,
Rafael D.

6

Hi Rafael,

This could maybe be an inspiration, but it’s not a product you can buy
off the shelf:

http://tipok.org.ua/node/41

I have met the creator and I’ve seen his board in use, albeit for DAB in
VHF.

Cheers
mpb

7

Rafael,
The TX2 direct sampling digital upconverter transmitter from
www.sdrstick.com covers the entire HF spectrum with a sample rate of
1.2+MSps and is priced at $180(US).
They have a GRC source block for the companion receivers and might have
developed a GRC sink block for the transmitter as well.

If you want to talk to me further, off-forum, email:
[email protected]

Regards,
John Petrich