Joe, That's certainly a plausible explanation. We ran MM logger all last weekend during the CQP without problems, (P3 not built yet). I had no issue with HRD earlier yesterday, until later at night when I switched to 40 and 80 meters looking for few signals through heavy static crashes. With all the AGC pumping going on is when I had these problems. Have the K3/P3 running all morning w/o HRD. No problems.
I'm looking at the LP bridge website now. Thanks for the suggestion. 73, Dan WA6PZK On 10/8/11 6:29 AM, "Joe Subich, W4TV" <[email protected]> wrote: > >> At the time, the P3 was also connected to a PC running HRD v5.0. No >> specific commands issued to HRD at the times of the AGC pop-off. I >> was not transmitting at the time it occurred either, (RF not an >> issue). > > As indicated by others, this is an issue with overpolling by HRD. HRD > enables the *K2* extended response mode and then polls for AGC status > *three times in succession* with no lag between the response to one > poll and the next poll regardless of the "Refresh Interval" set in the > HRD Options. > > It appears that the slight delay in data through the P3 and the poor > programming in HRD combine, perhaps with noise, to generate a false > "AGC OFF" command. One known "work around" (although with side effects > of its own) is to use LP-Bridge as a buffer between HRD and the K3. > LP-Bridge answers many of HRDs polls from its own cache and reduces > the excessive of the K3/P3. > > Note - "GT;" is not the only "duplicated" poll issued by HRD. In > addition to polling for AGC three times, HRD polls for both VFOs > (FA;/FB;) twice, selected transmit VFO (FT;) twice, Bandwidth (FW;) > *five* times, Antenna selection (AN;) twice, and Power level (PC;) > twice! > > 73, > > ... Joe, W4TV > > > On 10/8/2011 4:51 AM, Dan Sherwood wrote: >> All, >> >> After building and installing a new P3 pan adapter on a relatively new K3, I >> notice the AGC fast or slow setting would suddenly shut off, accompanied by >> a loud, distorted blast of signal audio. Normal AGC function is >> re-established by holding the AGC button, then tapping to select fast or >> slow. That would happen after a random period of time after power up and >> sitting on a frequency, (several minutes to an hour). >> >> I did not notice this issue before the P3 was plugged into the rig. I¹ve >> run the K3 over a week, including through the CQP contest and never noticed >> this issue before. Not sure if this is a software glitch or what. With a >> Heil Pro Set on, it is painful since it is unexpected, resulting in my >> rapidly and forcibly removing the Heil Pro Set from my head! >> >> At the time, the P3 was also connected to a PC running HRD v5.0. No >> specific commands issued to HRD at the times of the AGC pop-off. I was not >> transmitting at the time it occurred either, (RF not an issue). >> >> I have the P3 right up against the right side of the K3 with only a few mm >> separation afforded by the rubber feet on the K3. I notice the K3 case is >> hotter there, as the voltage regulators are attached internally to the case. >> Should I allow some space for cooling there? >> >> Any ideas? >> >> 73, >> >> Dan Sherwood >> WA6PZK >> >> ______________________________________________________________ >> 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
