Narrowband Radios

[sgtmatt]

Hi, will the newer amature based radios accept narrow band public saftey frequencies.


Thanks

 

[N_Jay]

Hi, will the newer amature based radios accept narrow band public saftey frequencies.


Thanks

Accept, as in programming (assuming they are opened up) probably. (depends on the particular radio)

Legal for use, or even "tolerable" for use? NO! Most ham radios deviate too much for 25 kHz channels.

 

[sgtmatt]

thats not what i ment, what i ment is will the recieve

 

[jim202]

A regular bandwidth receiver can receive a narrow band transmission on a regular channel.
What I am trying to say, is if you can get the receiver on the correct frequency, it will hear the
transmission. However, the received audio will be low. You will have to crank up the volume
in order to be able to hear it.

If the channel happens to be a splinter channel, then your receiver will need to be able to be
put on the channel frequency. Generally these channels are with 4 decimal place numbers.
Not all radios used today can be placed on these splinter channels.

Jim

thats not what i ment, what i ment is will the recieve

 

[n5usr]

Many current ham rigs do have a "narrow FM" mode. My Yaesu FT-8800 and 8900 mobiles, Kenwood TH-F6 and Icom ID-800H all have it.

As to whether it actually does anything noticeable on receive, I can't say. I haven't tried listening to any NFM frequencies with them. (Nothing I listen to is using it, other than 800MHz trunked systems.)

 

[N_Jay]

thats not what i ment, what i ment is will the recieve

Did you read the first line?:roll:

And if RECEIVE is what you meant, why did you not bother saying that in your first post?

So when I said:
Accept, as in programming (assuming they are opened up) probably. (depends on the particular radio)

I guess I should have said:
You can program in the frequency assuming the particular model allows the proper channel step size, and you can her the audio, but it will be low, unless the particular model has a "narrowband" setting, and you will probably have very bad selectivity, assuming the particular model has IF filtering optimized for narrowband, so in the end it depends highly on the PARTICULAR MODEL radio you have,

 

[sgtmatt]

Sorry i din't make myself more clear, I am thinking of investing in one of icom's D-star ready portables. My county is going to narrow band non encrypted frequencies eventually and i'm looking for a cheep way to recieve them.

 

[N_Jay]

Why not just get a scanner, then when/if they go P25 you will be ready.

Other than that, you need to look at the specification of the particular model you are interested in and see if it has a 12.5 kHz mode and tunes 7.5 kHz and 6.25 kHz steps.

 

[elk2370bruce]

D Star radios are not cheap by anyone's standards. If you're not licensed and not going to transmit, why are you wasting good money? Just get a decent scanner that can handle NBFM and get more bang for your buck. Also, check in the For Sale section of this site. Good stuff usually for fair prices.

PS. Start using spell check. You make yourself much clearer if we can understand your question.

 

[sgtmatt]

I am an amature operater kc9mle

 

[N4DES]

I find it interesting that he keeps spelling amateur incorrectly.

 

[N_Jay]

I find it interesting that he keeps spelling amateur incorrectly.

I am far more concerned about the use of non-part 90 equipment on p[art 90 systems.

But maybe I'm biased as a poor speller?:lol:

 

[nd5y]

I am thinking of investing in one of icom's D-star ready portables. My county is going to narrow band non encrypted frequencies eventually and i'm looking for a cheep way to recieve them.

Did it occur to you to download the instruction manuals from Icom's web site and look at the specifications?