Dot And Star Frequencies ?

Dot And Star Frequencies ?

Post by Robert1 » Tue, 25 Dec 2007 21:33:01

Hello,

Live outside of Boston.

Have come across some frequencies that (just) say:

Red Dot
Blue Dot
etc.

And also some that say:

Red Star
etc.

What are these, the Dots and the Stars, please ?

Thanks,
Bob

 
 
 

Dot And Star Frequencies ?

Post by North » Wed, 26 Dec 2007 00:01:38



> Hello,

> Live outside of Boston.

> Have come across some frequencies that (just) say:

> Red Dot
> Blue Dot
> etc.

> And also some that say:

> Red Star
> etc.

> What are these, the Dots and the Stars, please ?

> Thanks,
> Bob

They are industry-accepted designators for a series of frequencies
generally used by licensed low-power business radios. Often when a
business user purchases handy-talkies for, for example, use at a
construction site or in a store, they will come pre-programmed on one or
more of the dot frequencies.

Some of the most common ones are:

Channel         Frequency, MHz
Red Dot         151.625
Blue Dot        154.570
Green Dot       154.600
Purple Dot      151.955
Yellow Dot      464.550
Brown Dot       464.500
"J" Dot       467.7625
"K" Dot       467.8125
Silver Star     467.8500
Gold Star       467.8750
Red Star        467.9000
Blue Star       467.9250

For a detailed listing:

http://wiki.radioreference.com/index.php/Common_Itinerant_and_Business

Northe
N6KO
Green Valley, AZ

 
 
 

Dot And Star Frequencies ?

Post by xxnonexspamxnon.. » Wed, 26 Dec 2007 02:04:45


>Have come across some frequencies that (just) say:

>Red Dot
>Blue Dot
>etc.

>And also some that say:

>Red Star
>etc.

>What are these, the Dots and the Stars, please ?

When radios for job sites first came about, you still needed a license, but it
was commonly ignored.

To be sure that Joe Dolt got radios that worked together the manufacturers
devised a simple system.

Red Dot 151.625
Blue Dot 154.570

so if Joe Dolt went to Grainger and purchased 10 of these and told them he
wanted them on the Red Dot, they would all work together.

Most of these were single channel units like the Jobcom units.

A complete list is here:

http://www.wpascanner.com/wiki/index.php?title=US:Nat_Bus

Now days most of the Jobcom units have been replaced by the Motorola XTN units
with 15-30 channels or illegal use of FRS and GMRS radios at businesses.

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