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Re: [Discuss-gnuradio] USRP HF setup
From: |
Alexandru Csete |
Subject: |
Re: [Discuss-gnuradio] USRP HF setup |
Date: |
Sat, 25 Sep 2010 12:14:48 +0200 |
On Sat, Sep 25, 2010 at 8:38 AM, Davek <address@hidden> wrote:
> Has anyone had Any success with amateur HF with the usrp? I would like to
> purchase a basic rx and maybe a basic tx for monitoring the hf amateur bands.
> I know i need lownoise amplifaction and filtering but not sure what to get. I
> know i could just use the IF output of transciever, but im not sure if thats
> what i wanna do. if anyone has setup something i would be curious to hear
> about it thanks,
> Dave
Hi Dave,
I have had the USRP1 and LFRX connected to a Butternut HF2V antenna
with 30m and 160m extensions using ~30 meters of RG213 coax. No preamp
or filter or anything else, and I could hear lots of SSB/CW traffic
(even DX) and AM broadcast. I have two video recordings:
AM on medium waves: http://www.youtube.com/watch?v=317Iu6HRA0w
Hamradio SSB/CW on 7MHz: http://www.youtube.com/watch?v=t1FEq6h7Z1c
I have measured the sensitivity in CW to 3-4 microvolts so yeah, a
preamp would be useful above 10 MHz. I think one can get these
"acrtive whip antennas" for shortwaves, I guess the filter and preamp
could be used with a real antenna.
I have not tried the transmitter on the air. For sure that will need
power amplifier and low pass filters!
Alex
- Re: [Discuss-gnuradio] UHD Announcement - September 23rd 2010, (continued)
- Re: [Discuss-gnuradio] UHD Announcement - September 23rd 2010, Josh Blum, 2010/09/25
- Re: [Discuss-gnuradio] UHD Announcement - September 23rd 2010, Eric Blossom, 2010/09/25
- Re: [Discuss-gnuradio] UHD Announcement - September 23rd 2010, Josh Blum, 2010/09/25
- Re: [Discuss-gnuradio] UHD Announcement - September 23rd 2010, Tom Rondeau, 2010/09/26
- Re: [Discuss-gnuradio] UHD Announcement - September 23rd 2010, Eric Blossom, 2010/09/26
- [Discuss-gnuradio] USRP HF setup, Davek, 2010/09/25
- Re: [Discuss-gnuradio] USRP HF setup,
Alexandru Csete <=
- Re: [Discuss-gnuradio] USRP HF setup, Davek, 2010/09/25
[Discuss-gnuradio] Re: UHD Announcement - September 23rd 2010, Josh Blum, 2010/09/29