Re: [Drakelist] r4c pto drift obsevation

2012-01-05 Thread Garey Barrell
Larry - That is interesting I've never experienced it, as my shack has always been air conditioned. The PTO coil is pretty well sealed, and I wouldn't expect it to be susceptible to humidity. The only other sources would be the BAND oscillator, crystal controlled with a lacquered

Re: [Drakelist] r4c pto drift obsevation

2012-01-05 Thread Larry Mccabe
i agree re BFO..any thoughts on how to confirm which one is the culprit? was thinking a heat source ..ie hair dryer ...or small light bulb,directed independently at each might reveal some interesting results.. Larry WA0QHF Sent from my iPhone On Jan 5, 2012, at 2:59 PM, Garey Barrell

Re: [Drakelist] r4c pto drift obsevation

2012-01-05 Thread Garey Barrell
Larry - First, confirm that the counter is fully warmed up and stable, preferably with a TCXO or other better quality standard. The hair dryer or bulb heat source is undesirable for just that reason. We don't want a HEAT difference, just humidity with continuous temperature. Then, turn on

Re: [Drakelist] r4c pto drift obsevation

2012-01-05 Thread Kihwal Lee
-4XC/R-4C. hi. 73s, Kihwal, K9SUL - Original Message From: Garey Barrell k4...@mindspring.com To: Larry Mccabe lmccabe...@aol.com Cc: drakelist@zerobeat.net drakelist@zerobeat.net Sent: Thu, January 5, 2012 1:59:37 PM Subject: Re: [Drakelist] r4c pto drift obsevation Larry