Ted, Yes, you should get the BFO range and frequency correct - you can continue with no extra effort, but it must be resolved eventually, and there is no time like the present to do it.
Check the values of the capacitors C173 and C174, and while you are at it, check C169 too. Additionally, check the varactors D37 and D38 for the correct type (1SV149 - the smaller ones) qne proper orientation. Be certain the BFO crystals were the ones you soldered in - they are typically marked ECS D4.91 -S If you find all the above correct, you may have to pad Capacitors C173 and 174. Should that become necessary, use 47 pf in parallel with C174 and 120 pf in parallel with C173. The padder capacitors will lower the low frequency end more than the high frequency end of the range, so it should work for you - but do the padding only if there is nothing else wrong with the components. 73, Don W3FPR > -----Original Message----- > > I am in the process of testing the BFO on page 62. Everything > tested fine up to this point but now I can not get the proper BFO > range. The BFO high frequency is 4917.56 and the BFO low > frequency is 4914.26. This provides a BFO range of 3.2 kHz. It > appears that I can not the the BFO low frequency below 4912.7 as > specified in the manual. I checked L33 to make sure R116 is not > shorting any turns. Should I troubleshoot this problem before > proceding? If so where else should I look. Thanks. > > Ted K6OI > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
