Como expandir rango de frecuencia.

Saludos desde Costa Rica, yo necesito expandir el rango de frecuencia de un Walkie Talkie,
Marca Kenwood Modelo TH 22AT ya que soy Radioaficionado y no tengo conocimiento en ese campo, muchas gracias
a quien me brinde esta ayuda....
que Dios los Bendiga...!

Bajado desde mods.dk para th22

Hello OM's

the only modification I know and have tested with my TH22E is expanding it to 136-174Mhz range and turning into US mode. Unfortunately I don't think it is possible without opening the case. Here's how to do it:


Remove battery pack and reasseble the case. Open the case carefuly as there's special tape-connector connecting both halves.
Find the little cabels on the top-right corner of the silverplate (on the LCD display part).
One of the cabels in marked as "CH". Cutting this will turn your th22e into channel-only TRX (number of channels will correspond to the memory settings). Better don't cut this - you can set the same from the menu.
Next cabel (to the left of that "CH") keeps the range reduction. Cutting this will expand your portable and turn into US-mode.
Close the case, replace screws, etc. and reset your TH22E (by pressing F-key when turning on).
here comes the schema of this:
+-----------------+
-?? - -ch-??+-?? This is the half with LCD display.
-?? cut --> -?? -?? -?? ++ PTT The look from the silverplate side.
-?? this - - -?? ++
-?? cable -?? -??
-?? -?? -??
-?? -?? -??
-?? -?? -??
-?? -??
-?? -??
+-----------------+

In US-mode you can also use the CLONE-MODE. Just keep pressed the the REV/SHIFT key when turning on. Press PTT to start cloning to the other TH22E.

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Hi there.
For those of you wondering how to expand the freq. coverage of your TH22E, this is how you do it:
Remove battery and unscrew the two screws holding the front and back of the rig together. Carefully squeeze the sides of the bottom of the rig together so that the back cover comes unclipped from the from and ease forward to clear the LEDs on top (you will need to peel back the rubber top).
Inside, you will see two green wires marked W201 and W202. Cutting W202 will expand the TH22E from 137MHz to 174MHz on receive AND TRANSMIT.

DO NOT CUT W201! as this will cause the rig only to operate on the memory channel setting and THIS CANNOT BE REVERSED (Meaning that your TH22 will have to be returned to the manufacturer).

Replace backplate and battery.

I hope this is of help to some of you. The W202 mod has been tried by the supplier and the set appears to be working very well. There are some diodes nearby which I assume can be altered to give different RX/TX settings. Any suggestions


Suerte.

Enrique Vidal Lobos