> Kevin Custer <[EMAIL PROTECTED]> wrote:
> What was the basic 12 dB sinad sensitivity of
> your Maggiore?
Don't have it exact in memory, but I'll try to
refer back to the log notes and see what I wrote
down. Better than -116dBm real-world is a value
first comming back (in my short-term memory) for
the 12 dB Sinad value.
> >If you wanted a local speaker (which is
> >actually undesired in most cases), you'd
> >have figure out something out,
> >
> How is one to test for desense if you don't have
> a local speaker?
Desense tests are not restricted to using the
speaker output connections. Local speaker audio
power amps contribute distortion, which doesn't
really need to be worried about if the speaker
amp is not part of the actual repeater circuit.
Some of those cute little repco and Neulink
receiver boards I mentioned a while back, don't
even have an onboard speaker audio power amp.
> When you shut off the transmitter with the
> PTT Disable Switch, what does one listen to?
> Kevin
Doesn't your 8920a have an available speaker
output? I also have speaker amplifiers built into
some of my Sinad Meters plus the trusty tribble
size (9V battery powered) type portable speaker
amp from Radio Shaft (Shack).
My main concern about local speaker audio and
squelch settings is keeping those magic fingers
off the front panel controls, added distortion
of some of the circuit (ie the LM-380). Plus
the current requirements of the audio power amp
section at solar and limited power sites.
Once the repeater is done and installed at the
site, local speaker audio should be off anyway.
cheers,
skipp
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