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 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:Keyboard 1:RX
100-200, 330-500, and 896-1000 MHz; TX same Keyboard 2:TX 142.5-149.5 MHz; RX same 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 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.
Source QRZ: The Windows Ham Radio CDROM |
