Mark, Well, if relay K1 does not switch, you will not have any output on 160 meters - but you also said that it does not receive on the Rx antenna either - so relay K2 must not be working either. That combination would point to something wrong in the relay coil circuits. Check all the soldering on pins 3, 4, and 16 of J1 and check the soldering on the header as well (that will likely require removing the heat sink from the K2. Also check pin 1 of the header and J1 (that is the signal path for the RX antenna). Check the soldering on the K160RX board at the relay pins too.
You are probably looking for an unsoldered connection, or one that was not adequately heated. These connections can often work initially but develop enough oxidation to give trouble after a year or so. 73, Don W3FPR > -----Original Message----- > > I couldn't wait to attack the 160 test with my K2. I switched to top > band at the appointed time and heard..... nothing! So here's the deal. > > > My K2 is QRP, SN543 with all modules less the DSP. The 160 did work > when I last used it 3 years ago. The RX antenna likewise does nothing. > I pulled the board to look for problems and it looks FB. I tried > transmitting to a dummy load and the display reads LoP. Everything else > in the radio functions to spec. The 80/160 BP filters are tuned up > nicely for 80M. When I change bands from 80 - 160, I don't feel or hear > any operation from relay K1 on the 160 module. Ideas?? > > 73, > Mark K2QO/R and QRP > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.430 / Virus Database: 268.15.6/565 - Release Date: 12/2/2006 9:39 PM _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
