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<p class=MsoPlainText>Hey Sid,<o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText>I bread boarded the TR switch on the March 1999 QST
article "<a
href="http://www.arrl.org/files/file/protected/Group/Members/Technology/tis/info/pdf/9903040.pdf">A
Broadband HF Amplifier</a>" (if you have an ARRL membership) and it works.
The SoftRock is now transmitting through the PennyWhistle (amplified) and the
receiving when not transmitting. I found all the parts I needed at the local
Radio Shack. I still need to add another relay to invoke the PennyWhistle J1
switch pulling pin 2 to ground and I'll be ready to engrave the final solution
on a PCB. <o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText>Dave (W4DJW)<o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText>-----Original Message-----<br>
From: hpsdr-bounces@lists.openhpsdr.org
[mailto:hpsdr-bounces@lists.openhpsdr.org] On Behalf Of Sid Boyce<br>
Sent: Sunday, September 04, 2011 4:34 PM<br>
To: hpsdr@lists.openhpsdr.org<br>
Subject: Re: [hpsdr] Pennywhistle capabilities question<o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText>***** High Performance Software Defined Radio Discussion
List *****<o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText>Dave,<o:p></o:p></p>
<p class=MsoPlainText>I'll have to check the Softrock circuitry later.<o:p></o:p></p>
<p class=MsoPlainText>Essentially what you are getting is the same as if you
have a separate <o:p></o:p></p>
<p class=MsoPlainText>receiver close by whilst transmitting.<o:p></o:p></p>
<p class=MsoPlainText>Enough signal will reach the receiver if the antenna
socket isn't grounded.<o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText>Posting to the softrock40 group would get you more
information as it's <o:p></o:p></p>
<p class=MsoPlainText>just a case of adding a PA of any description to a
Softrock RXTX.<o:p></o:p></p>
<p class=MsoPlainText>I've got a SR63ng + Mobo v4.3.4 + SDR-Widget + 20W PA
that suffers from <o:p></o:p></p>
<p class=MsoPlainText>a si570 hang on TX.<o:p></o:p></p>
<p class=MsoPlainText>I haven't got around to looking seriously at it so far as
I'm busy <o:p></o:p></p>
<p class=MsoPlainText>trying to put together some add-on circuitry for the
HiQSDR, a sort of <o:p></o:p></p>
<p class=MsoPlainText>little brother to Hermes by DB1CC, described at
hiqsdr.org and based on <o:p></o:p></p>
<p class=MsoPlainText>a design by N2ADR which was featured in a recent QEX
article.<o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText>It's running on RX currently but needs needs a set of RX
BPF's and a <o:p></o:p></p>
<p class=MsoPlainText>case. I already have 15W and 5W PA's ready for it to use
standalone and <o:p></o:p></p>
<p class=MsoPlainText>to drive a AN762 to 140W and a EB104 for 300W for 3W
input.<o:p></o:p></p>
<p class=MsoPlainText>73 ... Sid.<o:p></o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
<p class=MsoPlainText><o:p> </o:p></p>
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