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if i had my way i would encourage manufacturers to make full RX/TX mods to be as simple as moving or removing those little black jumper plug thingys
1. Remove the cover from the unit and locate 6 pin jumper labeled J29. Move the shorting block from it's current position to the back/right position as shown.
2. Re-Assemble the unit and check All Bands for Proper operation.
my 78ltw came with talk-back (i asked for it that way) but it was s bit too loud for my liking . after a while i became annoyed with it and was afraid if i tried to de-solder it that id mess something up so i snipped each side of the resistor with toe nail clippers .
Please advise me to what is a good replacement mic for my SR-497HPC... Answer: 497 is "wired like Cobra", so many choices available. That radio does not need a power mic, so purchase a stock "coffin style" mic with a decent cord, like the ones that Astatic uses. The Superstar DM-507 is my go-to. https://www.ebay.com/itm/3050474478...adANq91JSiEEnz8EGqPJRBloTgEyaVsBoCtoMQAvD_BwE $12.99 + .99 cent shipping.
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