SCANNERS AND RADIO EQUIPMENT

[Anonymous]

With all of the NEW Digital crap that is going on now,I don't monitor the EOT Channel that much anymore! I now use the NEW Digital EOT Frequency for approaching Trains!
It is "SO" much better with this Channel........452.9375MHZ.<--I love this Channel. You can hear them coming way before there almost on top of you! BNSFrailfan.

[DPD1]

QUOTE: Originally posted by tree68

QUOTE: Originally posted by chad thomas

7.5 KHz spacing [:0]. Interesting. I havn't heard that. Larry, where did you hear that ? If you don't mind my asking.

I think it was here - it's been a while. Narrowband is happening in the entire VHF-Hi arena, not just railroad radio. Any new VHF-Hi land mobile radio you purchase today will be narrowband capable.

Yeah, they've been talking about it for a few years now... I have the frequency list on my site below. I don't know when it will actually start getting used though.

Dave

-DPD Productions - Home of the TrainTenna RR Monitoring Antenna-
http://eje.railfan.net/dpdp/

[Anonymous]

You mean the UP Road Channel is (NOW) 160.740MHZ then what would this 7.5 be all about? I don't understand. BNSFrailfan.

[chad thomas]

AAR assigned channels are now spaced 15KHz. they are going to be spaced 7.5 KHz apart.
Ex:
now:
160.320
.
160.335
.
160.350


comming soon:
160.320
160.327.5
160.335
160.342.5
160.350

[Anonymous]

QUOTE: Originally posted by chad thomas

AAR assigned channels are now spaced 15KHz. they are going to be spaced 7.5 KHz apart.
Ex:
now:
160.320
.
160.335
.
160.350


comming soon:
160.320
160.327.5
160.335
160.342.5
160.350

You mean:
160.320
160.3275
There is no Point "." between 75khz. At least on my Scanner.
Thanks for the help. I get it now.

But wouldn't cause Sever interference between let say the BNSF Dispatcher is on Channel 87. 161.415 and the interference would occure on eather side of 161.415?
There would be sound on all Cannels that are so close to that Channel.
BNSFrailfan.

[chad thomas]

Yes that is true, if you have adjacent channels in the same location.
In reality that shouldn't happen.

TV and FM radio are the same way. Thats why when you have citys relativly close one will use channels 2,4,5,7,9,11,13 and the other will use 3,6,8,10,12 (there is a space between 4 & 5 so that don't count).

When your half way in between, the signals are lower and more equall in level so adjacent channel rejection is not really a problem.

Does that explain it?

[Anonymous]

So when the NEW Frequency's do start,Will the old ones still be use? Such as 160.740MHZ? BNSFrailfan.

Sorry for being such a pest:(.

[chad thomas]

I would imagine so. The new freqs. would be used for expansion, to ease congestion on existings channels.

[Anonymous]

QUOTE: Originally posted by chad thomas

I would imagine so. The new freqs. would be used for expansion, to ease congestion on existings channels.

Thank you for the help.

[DPD1]

QUOTE: Originally posted by BNSF railfan.

So when the NEW Frequency's do start,Will the old ones still be use? Such as 160.740MHZ? BNSFrailfan.

Sorry for being such a pest:(.

Yes, the whole point is to double capacity. This is the same thing they did on the Euro air band, and will probably do it on our air band as well. They've done this on most bands throughout the history of radio, as time and equipment ability progresses.

Dave

-DPD Productions - Home of the TrainTenna RR Monitoring Antenna-
http://eje.railfan.net/dpdp/