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Old 11-14-2009, 1:28 AM
torrespi's Avatar
Join Date: Oct 2009
Location: Pueblo, Colorado
Posts: 30
Default Radio Shack Pro 106 and GRE PSR500 Audio Mod's

Greetings :
Get loud, clear audio through the PRO-106 Headphone jack and Speakers !

The Radio Shack Pro-106 (GRE PSR500) headphone jack only allows approximately 30% of the receivers audio through it to protect your hearing when using an earpiece. This however, makes it nearly impossible to use an eternal speaker with the unit, as the audio signal is greatly reduced through the headphone jack and will sound distorted when the volume is turned up.To obtain crisp, clean, loud audio using an extension speaker, follow these simple directions: (now your audio will increase by 70 per cent !)

first go to - Modifications for radioamateur

Don't want to undo the radio and do a quick fix !

This mod is done with a small piece of hobby wire.
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Old 11-14-2009, 11:13 AM
hoser147's Avatar
Join Date: Dec 2005
Location: Grand Lake St. Marys Ohio
Posts: 5,160

Hey that looks like my scanner. Glad it works for you

The Forums - hoser147's Album: Speaker Mod for external speaker Pro 95/96/106
Good Scanning Hser
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