This posting contains three mods for the ADI AR-247 They are extended freq coverage, S meter adjustment
and, changing between hold scanning and 3 second scanning This is version 1.3 of the 247 mod guide I plan
to update this if / when I find out other mods for this radio Out of Band Modification For the ADI AR-247
Extend Receive and transmit from 205.000 MHz to 239.995 MHz 1 Take off the bottom cover (it may help to
remove both covers), like other ADI radios, there is a red wire that is about 1 inch long in the front of the
radio Cut this wire and seal the ends so it does not short out the microprocessor 2 Reset the radio by
holding the VFO key and powering the radio on, turn the radio off and then reset the memory by holding the
MR/M key while powering the radio on Your radio should now receive and transmit from 205-239.995 MHz! Notes:
You may have to reset the radio a few times to get it to work, but it will I have done this to my radio and
it works fine S-meter mod The S meter on the 247 is not even remotely actuate It reads what should be a S-2
signal to be a S-9 signal By Turing the Pot VR-1 (it is on the main board next to the VCO) to the left, you
can make the meter read more accurately Though the meter still reads high, it is the best thing that can be
done short of changing a resistor in the radio I may do this in the future but for now I just decided to
live with it Hold/Resume programming How to do this in the manual is very sketchy The wording is in very
broken English Here is how the manual says to do it on page 20 section 5-5-2:1 Press the F key for longer
than 1 second The F indicator will Flash 2 Within 10 seconds of pressing the F key This will toggle the
Scan/Resume mode to carrier operated mode And B indicator will be on Their procedure does not even tell you
what key you have to press Here is how to do it 1 Press the F key for one second 2 Tap the F key A B
will appear over the hundreds place in the display I think ADI should have the manual retranslated to
English here in America This would prevent misunderstandings from harping Thats all for now, if you
discover any other mods please email me Happy tweaking, Bryan Fields, KB9MCI kb9mci@qsl.net
Source QRZ: The Windows Ham Radio CDROM |
