Tech question...

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R1VINCE

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...On some (if not most) of the older, conventional, GRE made Radioshack scanners, each radio has a chip named IC2, TK10420 chip in it that contains the scan control leg.
My question is - Do older model Unidens, i.e, 780xlt or 9000xlt or any have a similar chip with a scan control leg that can be accessed?

Im trying to make a Carrier Detection Light similar to that of the old mods done by Bob Parnass on the old PRO-2004/2006.

All my PRO base models have it and I was wondering if it is even possible on the Unidens.

Thanks in advance for the input.
 

gewecke

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You could simply add an LED to the decriminator output on most scanners if you're trying to make a busy indicator?
n9zas
 

Squad10

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From: http://www.uniden.com/pdf/BC780XLTom.pdf

Connecting the Tape Recorder

You can use a standard tape recorder or a VOX (Voice Operated Control) recorder.
To connect the recorder to the scanner, connect a cable with a 1/8 inch (3.5 mm) plug from
the tape recorder’s remote jack to the TAPE OUT jack on the back of the scanner. (Your
local electronics store should carry a wide selection of cables and tape recorders.) Refer to
the “Record” section under “Additional Features” in the manual.

Remember!

• You must mark a channel, ID, talkgroup, or bank for Recording in order for this
feature to work. The LINE icon appears on all channels that have been properly marked.

• This feature does not work if your scanner is set with MUTE ON.

Instead of activating a tape recoder, you could drive an LED that indicates channel activity. I believe the tip of the 3.5mm connector pulls to ground upon channel activity. It should source enough current to turn on an LED.
 

R1VINCE

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Thank you both for the input, as I will experiment with both your suggestions and post pix of the finished products if i can(if i dont blow anything up!)
 
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