As many of you know I am fairly new to ham and got a radio to use as a
base station this weekend. It is an ALinco dr 590. The guy told me it
had been modified to receive and transmit on extended frequercncies
even cellular.

I do not intend or want to transmitt illegally but it would be nice to
recieve the local police and aircraft if possible. When I plugged it up
I could get the frequency of my local police at 452 mhz but did not
have an antenna to see if I could hear anything or not. The vhf goes
from 130-174 I think. The uhf displays to 500 mhz. How can I tell if
this radio has been modified easily?

Also I thought cellular was 800 - 900 mhz. I could not get it to
display that.

As a last note does anyone know how I can find online a free manual for
htis book? I have looked but only been able to find the service manual.
Thanks again!

Mods for that radio should be found at,

http://www.mods.dk/view.php?ModelId=182

Since your radio already tunes out of the ham bands, I suspect the mod
for frequency extension has already been done.

Both operation and service manuals are available at the same site,
at:

http://www.mods.dk/view.php?ListManuals=alinco



Ed K7AAT

But I thought I would be able to get the aircraft bands and it does not
go that low. Plus one thing I read said the mods allowed you to tx but
not rx those frequencies. I am confused!

But I thought I would be able to get the aircraft bands and it does not
go that low. Plus one thing I read said the mods allowed you to tx but
not rx those frequencies. I am confused!



Your Alinco radio is FM only. Aircraft only transmit AM, so even if
your radio could be made to tune down to the aircraft frequencies, it
still could not hear (detect) aircraft radio traffic.

You apparently mis-read the "mods" information. No mod I ever heard
of would allow you to "TX" and NOT Receive. That wouldn't even make
sense. Probably you meant, receive only, without transmitting, which
would be just fine as you don't want to transmit out of the ham band,
anyway.



Ed K7AAT

My old Alinco HT used to tune down to the aircraft
bands and Rx the AM just fine. I bought it in the US.

Murray vk4aok

wrote:

But I thought I would be able to get the aircraft bands and it does not
go that low. Plus one thing I read said the mods allowed you to tx but
not rx those frequencies. I am confused!