# Most affordable UHD compatible SW transmitter

**URL:** <https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162>\
**Category:** GNU Radio\
**Created:** [June 1, 2015, 6:24pm UTC](https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162 "2015-06-01T18:24:54Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [June 1, 2015, 6:24pm UTC](https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162/1 "2015-06-01T18:24:54Z")

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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.

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**Author:** ![rubyisking](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/dec6dc/32.png) [@rubyisking](https://www.ruby-forum.com/u/rubyisking)\
**Post date:** [June 1, 2015, 10:32pm UTC](https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162/2 "2015-06-01T22:32:39Z")

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B200 is the lowest cost.

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**Author:** ![rubyisking](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/dec6dc/32.png) [@rubyisking](https://www.ruby-forum.com/u/rubyisking)\
**Post date:** [June 2, 2015, 4:46pm UTC](https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162/3 "2015-06-02T16:46:53Z")

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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.

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**Author:** ![rubyisking](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/dec6dc/32.png) [@rubyisking](https://www.ruby-forum.com/u/rubyisking)\
**Post date:** [June 2, 2015, 5:42pm UTC](https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162/4 "2015-06-02T17:42:23Z")

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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

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**Author:** ![rubyisking](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/dec6dc/32.png) [@rubyisking](https://www.ruby-forum.com/u/rubyisking)\
**Post date:** [June 3, 2015, 8:17pm UTC](https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162/5 "2015-06-03T20:17:23Z")

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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.

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<div class="post-metadata">

**Author:** ![rubyisking](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/dec6dc/32.png) [@rubyisking](https://www.ruby-forum.com/u/rubyisking)\
**Post date:** [June 2, 2015, 5:51pm UTC](https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162/6 "2015-06-02T17:51:09Z")

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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](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

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**Author:** ![rubyisking](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/dec6dc/32.png) [@rubyisking](https://www.ruby-forum.com/u/rubyisking)\
**Post date:** [June 4, 2015, 9:14pm UTC](https://www.ruby-forum.com/t/most-affordable-uhd-compatible-sw-transmitter/242162/7 "2015-06-04T21:14:18Z")

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Rafael,  
The TX2 direct sampling digital upconverter transmitter from  
[www.sdrstick.com](http://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:  
removed\_email\_address@domain.invalid

Regards,  
John Petrich