| Author |
Message |
    
Aircop12
Junior Member
Username: Aircop12
Post Number: 26
Registered: 5-2004
| | Posted on Thursday, April 28, 2005 - 2:08 pm: | 
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I would like to know where in the circuit board the R-104 is located. I have no manual for this radio and have been unable to locate this resistor.
Thanks : |
Tech291
Moderator
Username: Tech291
Post Number: 154
Registered: 11-2004
| | Posted on Thursday, April 28, 2005 - 7:00 pm: |
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Aircop12,
on the 8719 uniden made washington,R104 is located about 1 and 3/4" from the right side and 1 and 3/8" back from the front edges of the board with the front of the radio facing you.right in front of TR33
tech291
CEF#291
kc8zpj |
Aircop12
Junior Member
Username: Aircop12
Post Number: 27
Registered: 5-2004
| | Posted on Friday, April 29, 2005 - 8:35 am: |
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Thanks for the help !! One last question : is there any way to increase the receive on these radios ?
Thanks again : |
Tech291
Moderator
Username: Tech291
Post Number: 160
Registered: 11-2004
| | Posted on Friday, April 29, 2005 - 10:33 pm: |
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Aircop,
I would first have the alignment checked and fine tuned for the reciever,that may be all that is necessary.a recieve preamp would help but as broadbanded as most of them are(without any selectivity)they would also raise the noise level.in the past i have "tinkered" with washingtons and zachary t's,swapping out different transistors in the rf amp stages,trying faster diodes in the anl/nb circutes with mixed results.the biggest problem with that is the availability of sutable devices nowdays.
tech291
CEF#291
kc8zpj |
Bruce
Senior Member
Username: Bruce
Post Number: 2541
Registered: 9-2003
| | Posted on Saturday, April 30, 2005 - 12:37 am: |
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hummmmm? does it use a 2sc1674 for the receiver rf stage?
Tech Note
it does Bruce
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