Denny, Adjust the trimmers for maximum power. If the power goes above 5 watts, bring it down by repeatably tapping the WPM- button or exit TUNE and set the OUT menu to a lower value.
Remember that you are adjusting for a peak - and if the power output goes too high, you will not be able to see the peak of the tuning because the transistors have reached their peak capability. That is why you need to keep the power low while tuning. 73, Don W3FPR On 3/1/2012 6:47 AM, Dennis Rayfield wrote: > OK, I assumed that tweaking the trimmers on the filter board would just move > the power out small bits. such as if you have the power out set at P2.0, the > trimmers would tune between P1.7 and maybe P2.3. I want in and starting > adjusting them, and I get power out now in the right ranges, and fact I can > trim them for much higher than what I set the power for. I'll go back and > read the ALC stuff tonight, and make sure I understand it. > > Should I adjust the trimmers for max output, or to what I set the power out > to be with the menu? > > 73, > > Denny - KI3F > > > > On Mar 1, 2012, at 6:12 AM, Dennis Rayfield<[email protected]> wrote: > >> Don, >> >> Thanks for your questions and helping me work through this. The RF voltages >> I'm seeing are (on 30 M) are: >> >> PRE - .068 >> ATTN - .023 >> OSC - .014 >> MIX - .105 >> BUF - 1.37 >> TR1 - .62 >> BPF - .076 >> >> The DC voltages on page 46 were all within the ranges indicated. >> >> The output power in tune show P0.1 on all bands except 15M, there it moves >> up to P0.3 and stops there. I'll check the RF voltages at all points on all >> bands tonight after work... >> >> 73, >> >> Denny >> >> >> >> On Feb 29, 2012, at 10:17 PM, Don Wilhelm<[email protected]> wrote: >> >>> Denny, >>> >>> Tell us more - what band, and what >>> rf voltage are you reading at the Transmit mixer output (pin 4) How >>> about th DC voltages? >>> >>> 73. >>> Don W3FPR >>> >>> On 2/29/2012 10:04 PM, Dennis Rayfield wrote: >>>> I've build an RF Probe, and worked through the transmitter signal tracing >>>> section. All of the voltages are within range until I get to the >>>> band-pass filter. I'm just reading .07 volts rather than the 0.5-1.0 that >>>> it should read. I have the 4 band module (40, 30, 20, 15) and the relays >>>> click when I change the bands. >>>> >>>> Thanks for any help. >>>> >>>> 73, >>>> >>>> Denny - KI3F >>>> >>>> >>>> >>>> On Feb 28, 2012, at 10:12 PM, Don Wilhelm<[email protected]> wrote: >>>> >>>>> Dennis, >>>>> >>>>> It sounds like you need to turn the manual to the Transmit Signal Tracing >>>>> section in the back of the manual. >>>>> Once you isolate the failure to a specific stage, we can help you isolate >>>>> to the component level. >>>>> Right now, all we can say is that there is a problem somewhere in the >>>>> transmit path. >>>>> You might want to check for soldering problems, unsoldered components or >>>>> those where the solder did not flow out adequately onto both the >>>>> component lead and the thru-plated hole. Re-flow the soldering with a >>>>> hot soldering iron - 750 degF if you used leaded solder, 800 degF if you >>>>> used unleaded solder. >>>>> >>>>> 73, >>>>> Don W3FPR >>>>> >>>>> On 2/28/2012 9:58 PM, Dennis Rayfield wrote: >>>>>> I'm building a K1 and have everything finished and am at the stage for >>>>>> transmitter alignment and test. I use the out menu to set the output to >>>>>> 3 watts, but when I put it into tune mode it immediately shows P0.1 on >>>>>> the display and there is no power out. When I take it out of tune and >>>>>> go back to the out menu, that still shows 3 watts. >>>>>> >>>>>> Any suggestions where I should start with this? >>>>>> >>>>>> Thanks for any suggestions. >>>>>> >>>>>> >>>> ______________________________________________________________ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:[email protected] >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[email protected] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
