SoftRock 6.2 for 10m - NTMS
SoftRock 6.2 for 10m - NTMS SoftRock 6.2 for 10m - NTMS
W5HN North Texas NTMS Microwave Society SoftRock RXTXv6.2 for 10 Meters Al Ward W5LUA March 15, 2008 WWW.NTMS.ORG 1
- Page 2 and 3: W5HN http://groups.yahoo.com/group/
- Page 4 and 5: W5HN RXTXv6.2 North Texas NTMS Micr
- Page 6 and 7: W5HN K0AWU’s RXTXv6.2 Installatio
- Page 8 and 9: W5HN RXTXv6.2 Receiver Section Nort
- Page 10 and 11: W5HN RXTXv6.2 LO Daughter Board Nor
- Page 12 and 13: W5HN K0AWU’s Web Site North Texas
- Page 14 and 15: W5HN Using Rocky to drive RXTXv6.2
- Page 16 and 17: W5HN Inside my RXTXv6.2 North Texas
- Page 18 and 19: W5HN Special Flex Radio Software by
W5HN<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
<strong>SoftRock</strong> RXTXv<strong>6.2</strong> <strong>for</strong> 10 Meters<br />
Al Ward<br />
W5LUA<br />
March 15, 2008<br />
WWW.<strong>NTMS</strong>.ORG 1
W5HN<br />
http://groups.yahoo.com/group/softrock40/<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
The Yahoo <strong>SoftRock</strong>40 web site is a wealth of in<strong>for</strong>mation <strong>for</strong> building all<br />
versions of <strong>SoftRock</strong>s<br />
WWW.<strong>NTMS</strong>.ORG 2
W5HN<br />
SDR-1000<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
Image<br />
28.084<br />
LO<br />
Real<br />
28.092 28.100<br />
- Sampling Rate / 2<br />
+ Sampling Rate / 2<br />
IF = 8kHz <strong>for</strong> receive<br />
only<br />
LO is offset to receive<br />
frequency <strong>for</strong> transmit<br />
WWW.<strong>NTMS</strong>.ORG 3
W5HN<br />
RXTXv<strong>6.2</strong><br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
Image<br />
LO<br />
Real<br />
28.080<br />
28.09 28.100<br />
- Sampling Rate / 2<br />
+ Sampling Rate / 2<br />
For an LO of 28.090, to receive<br />
a signal at 28.100, requires an<br />
IF of 10kHz. IF same <strong>for</strong><br />
transmit. IF can also be as high<br />
as samplig rate / 2<br />
Note: Can NOT use standard Flex-Radio software<br />
WWW.<strong>NTMS</strong>.ORG 4
W5HN<br />
RXTXv<strong>6.2</strong> <strong>for</strong> 10Meters<br />
Produced by Tony<br />
Parks – KB9YIG<br />
Cost $50<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
Just add<br />
soundcard and<br />
computer<br />
Runs 1 watt @ 28<br />
MHz, all modes<br />
supported by<br />
software<br />
Builders notes by<br />
WB5RVZ on<br />
<strong>SoftRock</strong> web site<br />
were invaluable<br />
during assembly<br />
WWW.<strong>NTMS</strong>.ORG 5
W5HN<br />
K0AWU’s RXTXv<strong>6.2</strong><br />
Installation<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
Bill’s<br />
assistance<br />
was also<br />
invaluable<br />
during<br />
assembly<br />
WWW.<strong>NTMS</strong>.ORG 6
W5HN<br />
K0AWU’s Setup <strong>for</strong> 2M/MW IF<br />
Using RXTXv<strong>6.2</strong> from KB9YIG<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
WWW.<strong>NTMS</strong>.ORG 7
W5HN<br />
RXTXv<strong>6.2</strong> Receiver Section<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
WWW.<strong>NTMS</strong>.ORG 8
W5HN<br />
RXTXv<strong>6.2</strong> Transmitter Section<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
WWW.<strong>NTMS</strong>.ORG 9
W5HN<br />
RXTXv<strong>6.2</strong> LO Daughter Board<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
WWW.<strong>NTMS</strong>.ORG 10
W5HN<br />
Location of 10 .01uF chip<br />
capacitors on 10M version<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
WWW.<strong>NTMS</strong>.ORG 11
W5HN<br />
K0AWU’s Web Site<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
WWW.<strong>NTMS</strong>.ORG 12
W5HN<br />
K0AWU’s Web Site<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
WWW.<strong>NTMS</strong>.ORG 13
W5HN<br />
Using Rocky to drive RXTXv<strong>6.2</strong><br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
Rocky does not support SSB on transmit<br />
WWW.<strong>NTMS</strong>.ORG 14
W5HN<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
WWW.<strong>NTMS</strong>.ORG 15
W5HN<br />
Inside my RXTXv<strong>6.2</strong><br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
I separated the 10M receive and transmit connectors so that I could add a<br />
preamp in front of the 10M receive port to minimize LO radiation back out<br />
the receive connector. I also used RCA connectors <strong>for</strong> line input and line<br />
output – Do not use 1/8” stereo plugs. They are nothing but trouble.<br />
WWW.<strong>NTMS</strong>.ORG 16
W5HN<br />
My RXTXv<strong>6.2</strong><br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
BNCs <strong>for</strong> 10M rcv and xmit<br />
RCAs <strong>for</strong> line input, output, +12V, and<br />
PTT to RS-232<br />
WWW.<strong>NTMS</strong>.ORG 17
W5HN<br />
Special Flex Radio Software by<br />
PE1NNZ to run RXTX Board @ W5LUA<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
Monitoring AA5C/B on 222.060 while listening <strong>for</strong> WD5AGO/B<br />
on 222.074 and watching 222.100 all at the same time. Nice!<br />
WWW.<strong>NTMS</strong>.ORG 18
W5HN<br />
<strong>SoftRock</strong> RXTXv<strong>6.2</strong><br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
• I highly suggest the RadioShack Ground-<br />
Loop Isolator (pn 270-054) on both the<br />
receive and transmit (line in and line out)<br />
cables to help clean up spurs<br />
• Thanks to K0AWU <strong>for</strong> his support during<br />
the assembly of my <strong>SoftRock</strong>!<br />
• Now <strong>for</strong> a live Demo!<br />
• 73 de W5LUA<br />
WWW.<strong>NTMS</strong>.ORG 19
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