Scanner frequency changes when I enter it.

[Bourbon]

Hoping somebody can help me out with this.. Programming my scanner, I run into this problem hardly ever. 3-4 times I have entered a scanner frequency, and when I hit enter, that frequency changes. For instance, I enter 151.49750, yet, it stores 151.5000. Why is this? Why won't it let me change it?

Thanks for any info..

 

[Whiskey3JMC]

Welcome to the forums. First off, you need to tell us what make & model scanner so we can tell you how to change step size

 

[trentbob]

Adjust the step range.

 

[iMONITOR]

Hoping somebody can help me out with this.. Programming my scanner, I run into this problem hardly ever. 3-4 times I have entered a scanner frequency, and when I hit enter, that frequency changes. For instance, I enter 151.49750, yet, it stores 151.5000. Why is this? Why won't it let me change it?

Thanks for any info..

151.5000 is most likely the correct frequency, 151.49750 is SO close to 151.5000 it shouldn't make any difference in reception. In fact I don't think151.49750 is correct to begin with. Where did you get it from?

 

[Bourbon]

I'm in Oregon. I got the frequencies here. Oregon - Oregon Department of State Police Scanner Frequencies and Radio Frequency Reference

 

[nd5y]

151.5 isn't a valid allocation in the US. 151.49, 151.4975, 151.505 are.

 

[GTR8000]

151.5000 is most likely the correct frequency, 151.49750 is SO close to 151.5000 it shouldn't make any difference in reception. In fact I don't think151.49750 is correct to begin with. Where did you get it from?

RR Database Home

The most complete database of radio communications data

www.radioreference.com

It absolutely is a valid frequency. Why not take a few seconds to research it before posting?

 

[Bourbon]

Welcome to the forums. First off, you need to tell us what make & model scanner so we can tell you how to change step size

Thank you.. I was afraid you were going to say that . It's just an old BC60xlt-1. Looking through the manual I couldn't find a way to change the step size.. I remember years ago someone saying on a forum somewhere, to program in a frequency that would land on the correct one in a thread for someone else. I never seen the outcome of that.

 

[iMONITOR]

I'm in Oregon. I got the frequencies here. Oregon - Oregon Department of State Police Scanner Frequencies and Radio Frequency Reference

Ok, sorry.

 

[wtp]

Frequency Range:
29.0–29.7 MHz 10 Meter Amateur Band
29.7–50 MHz VHF Low Band
50–54 MHz 6 Meter Amateur Band
137–144 MHz Military Land Mobile
144–148 MHz 2 Meter Amateur Band
148–174 MHz VHF High Band
Above bands in 5 kHz steps

406–420 MHz Federal Government
420–450 MHz 70 cm Amateur Band
450–470 MHz UHF Standard Band
470–512 MHz UHF “T” Band
Above bands in 12.5 kHz steps

it says step size and nothing about changing it. you got that right.
and that is from unidens site

https://www.uniden.info/download/ompdf/BC60XLT-1om.pdf

 

[iMONITOR]

151.49750, try 151.4975 without the last zero.

 

[ka3aaa]

with most scanners you can only program 4 digits after the period to make the scanner receive properly.

 

[iMONITOR]

with most scanners you can only program 4 digits after the period to make the scanner receive properly.

Agreed. I think that's what led me to think it was odd.

 

[wtp]

151.49
151.495
151.5
those are the choices.

 

[iMONITOR]

151.5 isn't a valid allocation in the US. 151.49, 151.4975, 151.505 are.

GROOM LAKE BORDER SENSORS 151.5 MHz

https://www.lazygranch.com/sensors.html

From the site:

"Later generation transmitters were available in three different bands,
Lowband 600 channel system:
The lowest frequency, designated channel 0, is 138.025MHz. The channels are 25kHz apart. The highest frequency, designated channel 600, is 153.0MHz.
The Groom system used to be on 151.5MHz, which would correspond to channel 540.

Midband 1600 channel system:
The lowest frequency, designated channel 0, is 154.005MHz. The channels are 5kHz apart. The highest frequency, designated channel 1600, is 162MHz.

Highband 1920 channel system:
The lowest frequency, designated channel 0, is 162.00625MHz. The channels are 6.25KHz apart. The highest frequency, designated channel 1920, is 174MHz."

 

[Bourbon]

Agreed. I think that's what led me to think it was odd.

Yes, I have tried it both ways. Zero, no zero. Same result.

 

[Bourbon]

GROOM LAKE BORDER SENSORS 151.5 MHz

https://www.lazygranch.com/sensors.html

From the site:

"Later generation transmitters were available in three different bands,
Lowband 600 channel system:
The lowest frequency, designated channel 0, is 138.025MHz. The channels are 25kHz apart. The highest frequency, designated channel 600, is 153.0MHz.
The Groom system used to be on 151.5MHz, which would correspond to channel 540.

Midband 1600 channel system:
The lowest frequency, designated channel 0, is 154.005MHz. The channels are 5kHz apart. The highest frequency, designated channel 1600, is 162MHz.

Highband 1920 channel system:
The lowest frequency, designated channel 0, is 162.00625MHz. The channels are 6.25KHz apart. The highest frequency, designated channel 1920, is 174MHz."

This is interesting.. I'm just not sure how to apply everything else to what I'm looking for. It would be a bummer to have to wait an be abducted.

 

[iMONITOR]

Yes, I have tried it both ways. Zero, no zero. Same result.

You don't hear anything on 151.500 Mhz? If there is a signal on 151.4975 try what wtp suggested, they should all work.

wtp post #14
151.49
151.495
151.5
those are the choices.

 

[Bourbon]

You don't hear anything on 151.500 Mhz? If there is a signal on 151.4975 try what wtp suggested, they should all work.

wtp post #14
151.49
151.495
151.5
those are the choices.

Sounds good. I'll program all 3 in and see if I get a hit. I guess if I do, I'll narrow to the one with the best reception. Sure is weird though. Like a glitch. Kinda like side band or something.

 

[iMONITOR]

Sounds good. I'll program all 3 in and see if I get a hit. I guess if I do, I'll narrow to the one with the best reception. Sure is weird though. Like a glitch. Kinda like side band or something.

That slightly off frequency thing is very common on scanners.