UPMan or a mathematician that can figure out all image freqs. possible for 327.6 mhz.

[pro106import]

OK I originally posted this on the Military monitoring forum but it is now a new thread for here because things are evolving into a different perspective.
A little background:
I have been monitoring Milair for about 30 years now. I presently have about 500 Milair freqs in the UHF milair band that I constantly scan and record using scanrecorder pro in two 396XT's. I have NEVER heard a P25 signal on a 220-380 milair freq. using the Uniden 396XT in the three years I have owned them. Until last night.
I was hearing the P25 on 327.6 with a NAC of 280. Even in the middle of the night. This is normally an air refuel freq (AR-205). There was a substantial band opening here in Ct. last night (I was hearing New Hampshire stuff like they were around the block). But now I am hearing it again, several times within the last 5 min.
327.6 $280
And the band opening is gone.
I think it is gone anyway.
I cannot find a conventional freq. using NAC 280 in the whole northeast in the RR database.
Any mathematicians out there that can figure out all of the image possibilities for 327.6 on the BCD396XT (there are probably a few depending on which harmonic ect..)
UPMan? Help!
Dazed and confused,
Bob

[phask]

Good question, the obvious are fractions of the given freq. 1/2, 1/3, 1/4 etc. But it can be almost unlimited.

I'm nowhere near an expert but 2 frequencies can "work" together and generate another - intermod.

I've seen instances where a strong frequency at a repeater site interacted with a piece of metal, in this case a gutter, to create another that happened to be the input freq. for another repeater at the same site.

Will be watching for more replies.

[pro106import]

If anybody can read CW, i attached a .wav file of the CW ID here:
http://forums.radioreference.com/mil...ml#post1933105

[AlertNewEngland]

The fact that there was a CW ID pretty much confirms it wasn't mil air. I'm pretty curious, can't wait for someone to pull the station ID out of that code.

[nd5y]

Originally Posted by AlertNewEngland

can't wait for someone to pull the station ID out of that code.

I did. See the other post about it.

[LZ56]

(never mind, I read the other thread and got my answer)

[ecps92]

CW ID Answer at
A REAL mystery freq

Originally Posted by AlertNewEngland

The fact that there was a CW ID pretty much confirms it wasn't mil air. I'm pretty curious, can't wait for someone to pull the station ID out of that code.