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- Subject: How to Modify a AT-600/HTX 204 !
-
- Keyboard
-
- With the radio on.
- 1. Press "F" and "0" to enter main menu. Press "14623" consecutively until you here the confirmation beep.
- Turn off the receiver and turn it back on. Now the receive modification is done.
- 2. Press "F" and "0" to enter main menu. Press "1462311289"consecutively until you here the confirmation
- beep
- Turn off the receiver and turn it back on. Now the transmit modification is done.
-
- Hardware (CAUTION: It voids the warranty.)
-
- 1. Open the radio and remove Q220 from the keyboard.
- Turn on the radio by pressing "F", "LAMP" and "5".
- 2. Open the radio and remove Q220 and Q221 from the keyboard.
- Turn on the radio by pressing "F", "LAMP" and "5".
-
- If you have version 1.00 + 1.10 (Radio Shack's HTX-204 included):
-
- Keyboard 1: RX 100-200, 330-500, 830-868, and 896-999.995 MHz; TX same
- Keyboard 2: TX 100-200, 400-500 MHz; RX same
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- Hardware 1: RX 100-199.995, 330-499.995, 830-868, 896-999.995 MHz, TX same
- Hardware 2: TX 100-199.995, 400-499.995 MHz; RX same
-
- If you have version 1.20:
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- Keyboard 1: RX 100-200, 330-500, and 896-1000 MHz; TX same
- Keyboard 2: TX 142.5-149.5 MHz; RX same
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- Hardware 1: TX 138-174, 430-470 MHz; RX 130-174, 350-470, 869-999.995 MHz.
- Hardware 2: TX 100-200, 400-500; RX 100-199.995, 330-499.995, 896-999.995 MHz.
-
- If you have version 1.30:
-
- Not available at present.
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- Cellular Bands Information for ADI-600
-
- Mobile Cellular (823.9275 - 851.0000 MHz)
- - Unable to receive
- Portable Cellular(868.9375 - 896.1125 MHz)
- - 913.0375 - 940.2125 MHz (FM Mode)
- - Set frequency step to 30 kHz after you find one frequency that is used for the cellular in your area. This will work perfect.
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