Brian --
Do you have a little microphone preamplifier and a dynamic (performance
type) microphone you can plug into the Line-In input on the rear panel
octopus cable, to determine if that works as a microphone input on
sideband mode? That should give a good indication whether the Line-in
input is working correctly. A little microphone preamplifier, like the
M-Audio AudioBuddy will drive the transceiver in sideband mode with
moderate output levels on both the preamplifier and about 30-40% drive
level on the Omni VII Line-in input – and provide a rough equivalence to
what the microphone input on the front panel will give you using a a
similar microphone at about 40-50% MIC Gain setting.
This would test your line-in circuit independently from the digital mode
you are working with. Just remember to switch from MIC to LINE or BOTH
when doing this.
------------------------------------ K8JHR -----------------------------
On 8/13/2014 12:12 AM, Bob McGraw - K4TAX wrote:
The Omni VII does not have low gain. But it seems yours has a defective
LINE INPUT.
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