<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Brian, <div><br></div><div>You’re not asking for much, are ya! From what I can see it would involve a complete disassembly of the ANAN-100D in order to gain access to the relays themselves on the PA board, and I’ve had the thing for less than a day, hihi. </div><div><br></div><div>Yeah, sure, I’ll look it over and see how much trouble I can get into doing it to check out the possibility for you; if you’re sure you don’t want to dissassemble yours instead, that is!! </div><div><br></div><div>73, Joe K5SO</div><div><br></div><div><br><div><div>On Feb 9, 2014, at 1:42 PM, Brian Lloyd wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Sun, Feb 9, 2014 at 1:37 PM, Joe Martin K5SO <span dir="ltr"><<a href="mailto:k5so@valornet.com" target="_blank">k5so@valornet.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div class="">***** High Performance Software Defined Radio Discussion List *****<br>
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</div>Thanks, Bruce. Great to hear it!<br></blockquote><div><br></div><div>When doing the calibration one thing I noticed that surprised me is that gain is not consistent. Used to be on my ANAN-100D and ANAN-10 that gain was steadily lower going from 160m to 6m. I now have some bumps where not expected, e.g. the PA gain is higher for 15m than for 17m.</div>
<div><br></div><div>Hmm, the relay drivers for the PA BPF are a pair of TPIC6B595 shift registers. That means that it would be possible to shift in two bits and select two of the BPF in parallel. That might have a significant effect on the passband ripple. Can you confirm that only one bit gets loaded into the shift register?</div>
<div><br></div></div>-- <br><div dir="ltr">Brian Lloyd, WB6RQN/J79BPL <img src="http://www.catb.org/hacker-emblem/glider.png"><br>706 Flightline Drive<br>Spring Branch, TX 78070<br><a href="mailto:brian@lloyd.com" target="_blank">brian@lloyd.com</a><br>
<span><span id="gc-number-47" class="" title="Call with Google Voice">+1.916.877.5067</span></span></div>
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