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Author Topic: Have you ever heard of this?  (Read 940 times)
KB0PNB
Member

Posts: 38




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« on: February 24, 2008, 08:38:10 PM »

Today while searching for frequencies to program into my scanner I swerved into this: an apparent QSO on 168.550 Mhz.

These two fellas were discussing mostly ham related topics and they identified with callsigns that conform to the Amateur Service callsign format. Even the repeater identified with such a callsign. I missed all three callsigns, as I didn't catch on immediately what was happenning.

According to Google, this frequency is used by the Forest Service, ICS call-up, smokejumpers, etc, but had I not double-checked, I would have thought they were on 2 meters.

Am I missing a stroke here or what?

73... Mike
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K5PHW
Member

Posts: 71




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« Reply #1 on: February 25, 2008, 05:27:06 AM »

 More than likely an image or mixing of some sort.




73 Clyde
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WB2WIK
Member

Posts: 20614




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« Reply #2 on: February 25, 2008, 08:35:36 AM »

Most scanners have terrible image rejection.

What you heard was probably a QSO on 147.150 MHz.

147.15 + (2*10.7) MHz = 168.55 MHz.

The 10.7 is the I.F. of the receiver.

This kind of stuff happens all the time with scanners.

WB2WIK/6
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KB0PNB
Member

Posts: 38




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« Reply #3 on: February 25, 2008, 08:26:29 PM »

I'll bet that's what it was then.

Here's another one:

I used this scanner to identify frequencies (mostly in the aircraft band), then programmed them into my TM-241A.

This band was very active the day I scanned it, but heard nary a peep out of my Kenwood during a 4 hr. period.

73... Mike
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KB0PNB
Member

Posts: 38




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« Reply #4 on: February 25, 2008, 08:29:06 PM »

I just thought of something... it seems to me I once heard that the air band uses AM mode, however, I don't think the '241A is capable of that even outside the 2M ham band.

73... Mike
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