http://groups.yahoo.com/group/r2pro/ R2Pro /KK7B Designs Wed, 23 Dec 2009 00:43:24 GMT Bill Kelsey http://groups.yahoo.com/group/r2pro/message/699 http://groups.yahoo.com/group/r2pro/message/699 Rick - I just got an e-mail from Merle Cox - W7YOZ - who has had trouble with the 2m Source. I am sending him a couple of new crystals - that was apparently Tue, 22 Dec 2009 19:39:18 GMT ajparent1 http://groups.yahoo.com/group/r2pro/message/698 http://groups.yahoo.com/group/r2pro/message/698 The alternate possibilities are: Too great a tuning range and the quadrature hybrid is loading tuning. The other is the Hartly OSC tap point for the source is Mon, 21 Dec 2009 20:17:21 GMT KK7B http://groups.yahoo.com/group/r2pro/message/697 http://groups.yahoo.com/group/r2pro/message/697 Hi Bill and Bob, There is some subtlety in that circuit. I suspect that Bob has an oscillator FET on the edge of the J310 transconductance spec, and the Mon, 21 Dec 2009 18:56:50 GMT Bill Kelsey http://groups.yahoo.com/group/r2pro/message/696 http://groups.yahoo.com/group/r2pro/message/696 Interesting - sounds like something in the LC Circuit was not right and the RF voltage coming out of the VFO was low.... -- 73 - Bill - N8ET www.kangaus.com Mon, 21 Dec 2009 16:23:57 GMT rjbrjb20022002 http://groups.yahoo.com/group/r2pro/message/695 http://groups.yahoo.com/group/r2pro/message/695 Thanks Bill... Actually the plates were not shorting out, i checked that. Fact is, the rx worked okay when tuned to the high end, but as i tuned lower in Mon, 21 Dec 2009 15:37:12 GMT Bill Kelsey http://groups.yahoo.com/group/r2pro/message/694 http://groups.yahoo.com/group/r2pro/message/694 Hi Bob - The variable capacitor plates sometimes short out - and that stops the VFO oscillation. I have had three or four units out of several hundred that Mon, 21 Dec 2009 15:06:44 GMT rjbrjb20022002 http://groups.yahoo.com/group/r2pro/message/693 http://groups.yahoo.com/group/r2pro/message/693 Greetings to the list, and compliments of the season... I have recently built the microR2 receiver, 40meter version. I am having a lot of fun with it, Mon, 21 Dec 2009 14:43:36 GMT KK7B http://groups.yahoo.com/group/r2pro/message/692 http://groups.yahoo.com/group/r2pro/message/692 Not enough information. First: who are you? Have you ever done any electronic troubleshooting and repair? Do you have basic tools? Voltmeter, Mon, 21 Dec 2009 01:35:05 GMT patt896 http://groups.yahoo.com/group/r2pro/message/691 http://groups.yahoo.com/group/r2pro/message/691 I suspect that I have terminated one of the active components. Next time I'll use sockets for all of them. Any suggestions as to which ones to weed out Sun, 20 Dec 2009 22:17:21 GMT Ron Thompson http://groups.yahoo.com/group/r2pro/message/690 http://groups.yahoo.com/group/r2pro/message/690 ... Personally I have more confidence in my old gear than the newer models. ... I'll check out the PAR products. At our morning coffee we were discussing Sun, 20 Dec 2009 21:42:50 GMT Ron Thompson http://groups.yahoo.com/group/r2pro/message/689 http://groups.yahoo.com/group/r2pro/message/689 Thanks Rick, I really appreciate the talent here on this list. Having lived up here for a few years I've been impressed by how different amateur radio is this Sun, 20 Dec 2009 21:02:39 GMT ajparent1 http://groups.yahoo.com/group/r2pro/message/688 http://groups.yahoo.com/group/r2pro/message/688 ... Generally for EMCOMM work I go with the most bullet proof arrangement I have. In theory it's an emergency and things just have to work. So I tend to Sun, 20 Dec 2009 19:16:48 GMT KK7B http://groups.yahoo.com/group/r2pro/message/687 http://groups.yahoo.com/group/r2pro/message/687 Hi Alison and Ron, It does sound like the first problem Ron need to address is getting that RF out of the shack. Some of the old gear was more tolerant of Sun, 20 Dec 2009 16:00:17 GMT Ron Thompson http://groups.yahoo.com/group/r2pro/message/686 http://groups.yahoo.com/group/r2pro/message/686 Thanks Alison, it doesn't have to be a "good" contest radio :-) and if it was set up for emcomm use then it probably should be a bullet proof radio or it may Sun, 20 Dec 2009 14:21:02 GMT ajparent1 http://groups.yahoo.com/group/r2pro/message/685 http://groups.yahoo.com/group/r2pro/message/685 ... All of them need a CW filter if thats the mode your using. Set up right with that filter they Omni or 897 are hard to beat. I can say for the 735 as I