gm300 audio

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radio-man61
New User
Posts: 4
Joined: Sun Jul 22, 2007 9:13 pm

gm300 audio

Post by radio-man61 »

I have two gm300 wired together for a generic repeater at close range the radios are fine but at 50 miles away the audio is so bad it sounds like garbage, i have turned the audio down in both the radios and it gets better. after i leave the site it seems like i have the same problem just minutes later how far down do i need to turn them
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RFguy
Posts: 1357
Joined: Wed Dec 21, 2005 6:17 am

Re: gm300 audio

Post by RFguy »

Use the duplex function of your service monitor and set repeater for 1:1 at 1Khz.
Sweep audio from 300Hz to 3000 Hz. repeat the sweeps at diferent deviation levels. See what that turns up.
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asdfg
Posts: 50
Joined: Tue Apr 19, 2005 4:37 am

Re: gm300 audio

Post by asdfg »

Do you use a RICK interface. Which audio are you using from receiver radio, discriminator audio or speaker audio? If you are using speaker audio, maybe audio is to big or low and in that case you control that level with volume on receiver radio. If you are using RICK interface and discriminator audio output on receiver radio to put into RICK interface, should be no problem because that.
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