[time-nuts] Temperature stability for Thunderbolt: results

Bob Bownes bownes at gmail.com
Sun Jan 30 05:22:26 UTC 2011

I solved the same problem today by putting the antenna in the skylight
dome in my 'office'. Between the heat loss and the dome shape the snow
pretty much stays off of the skylight. This is after I just had the
antenna laying on the roof, where it got buried under 10+inches of
snow in the last week or two.

On Sat, Jan 29, 2011 at 12:14 PM, Charles P. Steinmetz
<charles_steinmetz at lavabit.com> wrote:
> Magnus wrote:
>> Maybe a LH controlled hair-dryer to burn off some snow?
> I have actually given some thought to adding a de-icer (heater) to my
> outdoor antenna, as is done with many broadcast, radar, etc. antennas.  Of
> course, it wouldn't need to be controlled by LH -- a manual switch indoors
> and a thermostat near or attached to the antenna would be sufficient.
> My present solution is to fall back on an indoor antenna.  Placed in the
> attic, looking through just the roof (not the indoor ceiling, as well), the
> results are nearly as good as the outdoor antenna (I lose about 2 dB net
> through the roof plus 10" of snow, compared to the outdoor antenna -- the
> actual field loss is presumably somewhat greater, but is partially offset by
> the additional 75 feet (~25 m) of coax on the outdoor antenna).
> Best regards,
> Charles
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