[TowerTalk] Tuner SWR won't stay down

[David Gilbert]

Good thought, except that he mentioned that everything behaved OK when 
using a different tuner between the transmitter and the 989C.

Dave   AB7E


On 1/2/2015 5:16 AM, David Robbins wrote:
> I haven't been checking every message... but has anyone noted that what is driving it could be the problem?  Tuners act as a rather narrow bandpass filter in most cases so if the radio/amp driving it is generating a harmonic or parasitic that varies as it warms up the swr measured will increase.
>
> David Robbins K1TTT
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