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Can a repeater be partially keyed on?
On 10/7/2010 12:45 PM, Dick Grady AC7EL wrote:
Can anyone explain the above phenomonon? Dick AC7EL I can not explain that one, though the next person's suggestion makes sense at first glance (I've not looked at it 2nd glance) I do agree the signal strength (As indicated on an S-Meter) of the repeater should NOT be dependent on the strength of the received signal. I have a slightly different story (And it's resolution) People told me that when I transmitted the repeater moved off frequency a few hertz. (I forget how much) Plus I could not access DTMF controlled features. Finally I hooked a 'scope to the modulator line in the radio and saw a very interesting trace.. The top half was nearly square while the bottom half was sinusoidal (As it should be) Turns out the radio had a couple of clipping diodes in the audio,, One was open. Adjusted mic gain till the trace was all sinusoidal. then adjusted modulation gain till the traqce was the original P-P size, hit the 4-digit command to force a repeater ID on the DTMF pad. and Got the CWID back from the repeater.. several times, Worked fine after that. -- Nothing adds Excitement like something that is none of your business. |
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