narrow band

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mrbobcat
New User
Posts: 2
Joined: Sun Dec 02, 2007 6:55 am

narrow band

Post by mrbobcat »

hello all,

was wondering if the maxtrac / radius mobile will do the new narrow banding or do i need to look for a newer radio? what is this all about?

thanks,
mike
35echo
Posts: 107
Joined: Sun Dec 02, 2007 8:07 pm

Re: narrow band

Post by 35echo »

The radios can be retrofitted to do narrowband but it is all or nothing. What I mean is it is all narrowband or all wideband. You cannot mix the two. It involves changing about half a dozen parts and realignment.

Regards,

Allen
mrbobcat
New User
Posts: 2
Joined: Sun Dec 02, 2007 6:55 am

Re: narrow band

Post by mrbobcat »

what will happen if i put in the freq that is going to be used on the narrow band. will it still work or will it not? im not sure about this. thanks for all replys.......
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Tom in D.C.
Posts: 3859
Joined: Tue Sep 04, 2001 4:00 pm
What radios do you own?: Progreso soup can with CRT

Re: narrow band

Post by Tom in D.C. »

A narrowband signal heard on a wideband radio can tend to sound
what we call "thin" which is a codeword for weak-sounding audio.

A wideband signal heard on a narrowband radio can tend to sound
distorted because the signal is too wide for the passband of the radio's
receiver. If the wideband signal is overly wide, compared to the radio's
passband, the signal can be "clipped" which means parts are actually
lost and not heard.

What you might have heard about new requirements for narrowband radios
has to do with new FCC standards which will be enforced at a future date. Do a
search on this Board for the subject and you'll find a lot of material.
Tom in D.C.
In 1920, the U.S. Post Office Department ruled
that children may not be sent by parcel post.
Al
Posts: 1045
Joined: Tue Sep 04, 2001 4:00 pm

Re: narrow band

Post by Al »

I second all the above, and add that the synthesizer in the Maxtracs will not program to the splinter frequencies, which are becoming more common as people move to narrowband. So a narrowbanded Maxtrac is a lame excuse for a full featured(read: programmable to accept splinter freqs with automatically switched receive audio gain when 12.5 khz B/W is selected/programmed) more modern radio.
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