The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

got this radio from a friend with a channel mod in it already but it is stuck on frequeny no matter what position switch is in. pc board # is198-ab and has the 858 pll chip. if i take out the mod frequency switches fine. it has a SPDT switch. the middle leg is soldered to pin 19 and trace is cut to ...

need help on installing talk back on a 148 gtl sound tracker

Radio Make and Model: cobra 148 gtl st thailand PCB Number:unknown PLL Number:mmb8719 Test gear available:swr watt modulation meter, volt meter and freq counter Symptoms: low modulation What is working: everything seems to be working just low modulation around 60% What has been tried:changed driver ...

finally got this 148 fixed replaced caps again around audio chip and came to life thanks guys

Radio Make and Model: teaberry "T" command PCB Number: pc198ab PLL Number: D858 Test gear available: swr meter, volt meter, freq counter Symptoms: loss of watts after being keyed up more than 15 to 20 seconds What is working: everything else seems to work 4 watt dead key and 80% mod on cha...

does anyone know anything about this scanner. like how it works or what the buttons do or maybe where i can get a manual. thanks

replaced caps C175,176,179,180 and no difference still no sound

sorry to bother thanks anyway

scott3696 wrote:hey rick i'm still green at this what do i need to check voltage or ohms or what. thanks

and also do i need to solder r87 and d65 back in. thanks again

hey rick i'm still green at this what do i need to check voltage or ohms or what. thanks

hey rick thanks for info but it did not seem to help any but i can here a little static in speaker if i hold it up to my ear any other suggestions thanks

any other ideals thanks

this mod says put wires in empty holes where as mine are not empty on r236 and r189

this modification does not work on my galaxy it turns my sound off and modulation when i key

i changed that ic chip mentioned before now the ic gets hot and still no sound

sorry no i havent checked link yet and there are no mods to this radio that i know of pretty fresh radio i'll let you know about the talk back soon

i also noticed if i put two or three of my fingers on board just right i could here some sound

yeah what do i need to check on ic 6

how do you install talk back on this radio. thanks

i have a 148gtl made in taiwan it transmit and recieves according meter but no sound through internal speaker or external speaker. i've changed mics no difference, i also changed ic5 chip no difference except that chip gets warm now where before it didnt. any clue or help. thanks.