[Elecraft] KPA500 mobile?

[Bob Nielsen]

Waveguide below cutoff.

On 4/15/17 10:54 AM, Clay Autery wrote:
> The ultimate directional, high-pass filter...  <grin>
>
> ______________________
> Clay Autery, KY5G
> MONTAC Enterprises
> (318) 518-1389
>
> On 4/15/2017 10:14 AM, Jim Stahl via Elecraft wrote:
>> OTOH, this can be a feature of tunnels, not a bug. Several years ago I was riding on the “BikePike”, an abandoned section of the PA Turnpike east of Breezewood that has become a bicycle route featuring two old tunnels. Although closed off to motor vehicle traffic, we noticed a pickup parked outside the entrance to one of the tunnels. A few hundred yards into the tunnel we encountered a minivan with lots of high end electronic test equipment. Turns out the guys were doing tests on some military equipment, to determine that it was RF quiet to prevent detection by enemy forces. We didn’t ask a lot more, lest they would have had to shoot us  :-)
>>
>>
>> 73  -  Jim  K8MR
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