PRO51.2

You don't have to keep these frequencies in these channels. You can move them
to any channel in the scanner. First move them to a monitor channel.

While on a channel with one of these frequencies, open squelch completely.
Press direct search button, either up or down. The direct search button puts
the scanner into search mode and the open squelch holds the frequency. Then
press the Monitor button. The frequency is now in the monitor channel indicated
in the display.

Now you can move it to any regular memory channel in the scanner.

Enter the channel number
Press PROG
Press Monitor
Press the number of the monitor channel if the proper channel is not displayed
Press E(nter)

The frequency is now permanently stored in the memory channel. You can do a
direct search from this memory channel at any time.

The 66-88 Mhz range mainly covers TV audio. However, there is a strange
phenomenon concerning TV audio and the PRO-51. Channels 4, 5, and 6 audio fall
within the 66-88 Mhz range, yet the PRO-51 will not pick up the audio frequency
while searching in this range. However, TV channel 2 audio is at 59.75 Mhz.
When you add the intermediate frequency of 21.6 Mhz, you get an image of the TV
channel 2 audio appearing at 81.35 Mhz. This does come in, although raspy,
since the PRO-51 is receiving in narrow FM mode while TV audio requires wide
band FM mode for proper reception.

I'd be interested in anyone can verify that any of these test modes work on the
PRO-46 or any other Uniden-made Radio Shack scanner.

The test modes I've described as modes 0 and 1 (clearing all channels and
plugging in test freqs in the first 20 channels) have been around since the
BC200XLT (I think also the BC100XLT). They also appear in the BC2500XLT,
although I couldn't find any other test modes in that scanner. The BC220XLT
allows you to do a display element test mode, but, unlike Jeff, I haven't
confirmed any other modes as I don't want to wipe out all my channels. I expect
that Uniden-made Radio Shack scanners will have at least these two modes and
may have the other modes as well. I'm hoping a PRO-46 owner will test this for
us.

I wish I could take the credit for coming up with this trick, although it's
ironic that I had all of the relevant info in my head...I just didn't put it
together.

The basis for this trick came from Glenn Cohen of Scanners Unlimited who was
told this by someone who walked into his store. Glenn confirmed it with Larry
Van Horn at Monitoring Times. I independently discovered modes 3 and 4, which,
to my knowledge, have never been published before.

I did find the display test mode works on the BC220XLT but didn't want to lose
all my memories to try the others. Thanks for biting the bullet and seeing what
happens on yours! Of course, without the RS direct search feature, the test
freqs in the Uniden-label scanners don't do much good.

73' de Sal, IW0DHH