Wow, thank you very much for such a quick response! As it happens, I already have a 10uH choke installed, so I guess my next step will be to contact electraft's parts department and ask if they'll send me a 12uH choke to try. Hopefully this will resolve the problem.
Thanks again for your help! David - VA7DMS On 09/06/05, Giulio Pico IW3HVB <[EMAIL PROTECTED]> wrote: > David Cartwright ha scritto: > > cut > > >I'm currently measuring the range between the high and low frequencies > >for the PLL Reference Oscillator. As the manual states, I should be > >getting a value between 9.8 and 15 kHz. However, my actual measured > >value is 8.94 kHz. I've done the previous step, 4MHz Oscillator > >Calibration, using an external frequency counter. I've adjusted C22 > >to have the internal frequency counter match the external one. Going > >on to the next step, I measured the High frequency range on the PLL > >Reference Oscillator and read a result of 12100.01 kHz, and a result > >of 12091.07 kHz for the low range. As I mentioned before, this is > >only a 8.94 kHz difference. > > > >I've also checked over some of the previous posts on this group, and > >have gone over some of the recommendations posted; specifically > >measuring the voltage across D16 and D17, which was about 7.75 V > > > >I'm at a loss now as to what else I should try, or whether I am able > >to move on and accept this value. Any suggestions or advice would be > >greatly appreciated. > > > >Thanks in advance, > > > >David - VA7DMS > > > > > > > Check if L31 (RF choke) is valued at 10 microH. If the answer is Yes, > change it with a 12 microH one. This should solve the problem. > Send an e-mail at [EMAIL PROTECTED] cause they are able to send you the > replacement. > > Happy Building. > > Giulio IW3HVB K2#4681 > _______________________________________________ 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
