realistic trc 449

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galaxy
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realistic trc 449

Post by galaxy »

I have a realistic trc 449, pcb# pc 176bd, with a 858pll.
no transmit on am & ssb.
it receives on upper & lower ssb, but not on am.
No in coming signal on the meter on am.
it has in coming signal on ssb.
I hear the relay working.
no output movement on the meter when i key the mic.

a brown wire with a red & white wire with sheild came off. i was trying to put on a wattage control were the r f gain was. and it shorted out . i need to know were to put the wires back. please help!!! galaxy
ramblingman
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Post by ramblingman »

hi there,let me try to find a schematic on it.and study it alittle.and i will get back with you tomorrow.....ramblinman
ramblingman
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Post by ramblingman »

hello,most likely you are missing one or more of your branch voltage at the p.s.b..check tr-41.first check voltages at tr-41,and let me know your findings.more than likely youll find tr-41 either o/s.but give me your voltage readings at tr-41,and then we will proceed from there.tr-41 is a 2sc 945aq.emitter should be 8.16 in am and 0 in ssb.base should be 8.71 in am.and collector should be 9.31 v.d.c.
galaxy
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trc 449

Post by galaxy »

on am i'm not getting 8.16 im getting 2. on ssb looks good im getting 8.+ on the collector on am its low, but on ssb it looks good. (i for got this) on ssd everyone sounds like donald duck... thanks galaxy
ramblingman
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Post by ramblingman »

hi,i think you should replace tr-41,try that and see if normal operation returns.
galaxy
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trc 449

Post by galaxy »

sounds good on ssb, i heard myself on another radio. still no receive on am. and no output power .galaxy
galaxy
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trc 449

Post by galaxy »

still need help with this radio.. galaxy
galaxy
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Posts: 38
Joined: Wednesday 2nd Nov 2005, 8:10
Location: brooklyn NY 11234 USA

trc 449

Post by galaxy »

i need help with this radio. please read my post . galaxy
Chevin
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trc 449

Post by Chevin »

Have you tried asking Rick? You would need to give a full description of what your fault is along with what you have tried to sort the fault out.

Chevin.
galaxy
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Location: brooklyn NY 11234 USA

Post by galaxy »

help help
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