<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Frank<div><br></div><div>I've had a look at the CCI AN779L kit but it looks horribly complex for a driver stage. <a href="http://www.communication-concepts.com/an779L.htm">http://www.communication-concepts.com/an779L.htm</a></div><div><br></div><div>I prefer the look of the K5OOR SDR 5W Amp kit as it's less complex (and costly). <a href="http://www.hfprojectsyahoo.com/sla5wamp.html">http://www.hfprojectsyahoo.com/sla5wamp.html</a></div><div><br></div><div>Phil Harman reminded me of an article he published in RadCom last July with a driver stage which would fit the bill. Unfortunately there doesn't appear to be a PCB for it and I'm not a fan of 'dead bug' construction.</div><div><br></div><div>I am inclined to curb my impatience and wait for the Pennywhistle kit assuming it will materialise in the same time-frame as Alex. In this way the whole shooting match will be HPSDR.</div><div><br></div><div>The AN762-140 amp driven with 500mW should produce around 14W (assuming the claimed power gain of 14dB) which should get me a few contacts while I wait for the 'real thing'.</div><div><br></div><div>All I need is some decent weather and a little assistance to get my multi-band vertical installed and I can start making some on-air tests.</div><div><br></div><div>Thanks to everyone who responded to my query.</div><div><br></div><div>73</div><div>Chris G4NUX</div><div><br><div><div>On 13 Jan 2009, at 12:45, Frank Brickle wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Chris --<br><br>If you do go ahead with that, please let me know. I'm putting together a DC-to-daylight rig based on the USRP and am prepared to confront the power gap on the HF TX side now :-)<br><br>73<br>Frank<br>AB2KT<br> <br><br><div class="gmail_quote">On Tue, Jan 13, 2009 at 7:30 AM, Chris Smith <span dir="ltr"><<a href="mailto:chris@vspl.co.uk">chris@vspl.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div style="">Hi Frank<div><br></div><div>Many thanks for that. The amplifier I have is that based on Motorola's AN762 with a pair of MRF454s. The kit came from Communications Concepts!</div><div><br></div><div>Cheers & 73</div> <div><br></div><div>Chris G4NUX</div><div><div></div><div class="Wj3C7c"><div><br></div><div><br><div><div>On 13 Jan 2009, at 12:21, Frank Brickle wrote:</div><br><blockquote type="cite">Chris --<br><br>I'd been wondering approximately the same thing, and was reminded of<br> <<a href="http://www.communication-concepts.com/hf_amplifiers.htm" target="_blank">http://www.communication-concepts.com/hf_amplifiers.htm</a>><br> especially the AN779L.<br><br>73<br>Frank<br>AB2KT<br><br><br><div class="gmail_quote"> On Tue, Jan 13, 2009 at 7:01 AM, Chris Smith <span dir="ltr"><<a href="mailto:chris@vspl.co.uk" target="_blank">chris@vspl.co.uk</a>></span> wrote:<br> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> ***** High Performance Software Defined Radio Discussion List *****<br> <br> Hi Guys<br> <br> I know this a bit off topic but I would appreciate your help.<br> <br> Penny, as an exciter, produces 0.5W. I have an amplifier which will produce 100W if driven with approx 10W. Does anyone have a simple circuit for an amplifier which will produce approx 10W from 0.5W drive?<br> <br> I suggest you contact me directly rather than clutter the reflector. :-)<br> <br> Thanks<br> <br> 73<br> Chris G4NUX<br> _______________________________________________<br> HPSDR Discussion List<br> To post msg: <a href="mailto:hpsdr@hpsdr.org" target="_blank">hpsdr@hpsdr.org</a><br> Subscription help: <a href="http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org" target="_blank">http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org</a><br> HPSDR web page: <a href="http://hpsdr.org" target="_blank">http://hpsdr.org</a><br> Archives: <a href="http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/" target="_blank">http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/</a><br> </blockquote></div><br><br clear="all"><br>-- <br>Designing software that works on the assumption that everyone will have your client is like designing a society on the assumption that everyone will just be honest. -- Paul Graham<br> </blockquote></div><br></div></div></div></div></blockquote></div><br><br clear="all"><br>-- <br>Designing software that works on the assumption that everyone will have your client is like designing a society on the assumption that everyone will just be honest. -- Paul Graham<br> </blockquote></div><br></div></body></html>