On 10/6/2016 2:03 PM, Richard Fjeld wrote:
Fred, What is the typical winter temp when the radio works, but no display?
Guesstimating here ... our highs are currently in the high 60's/low 70's [in the sun] and lows are running in the low 40's/high 30's [all degrees F, we're going metric inch by inch]. The display lit up just fine at 0530 local last Sat when it might have been 38-40 or so in the truck. Last winter, lows were in the low teens, highs in the low 30's, and the display would take 4-5 minutes to brighten up.
Also, you mentioned crystals not oscillating at cold temps. That may have been happening in the past when I thought it was due to low gain in the oscillator circuits.
Could be. In Alaska, the luggable Motorola non-tac VHF radios sometimes would fail to work if they weren't warm. A hair blower on the crystals would usually resurrect them. Once the radio was in use, they seemed tp perk along fine ... until my troopers set them down on the ground and froze the batteries. :-)
73, Fred K6DGW - Sparks NV DM09dn - Northern California Contest Club - CU in the Cal QSO Party 7-8 Oct 2017 - www.cqp.org ______________________________________________________________ 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 Message delivered to [email protected]
