Yes, there are transmitters on the 72-76 MHz band, but several
manufacturers (at least in the U.S.) make and sell equipment that
operate in the 216 MHz range. I believe this allocation began
relatively recently but don't know an exact date.
The 72 MHz devices are usually older systems and the newer personal
systems utilize the 216 MHz frequency band allocation.
Don
----- Original Message -----
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, November 04, 2007 3:27 PM
Subject: Re: thf-6a question
> most of those assistive hearing devices, or the FM systems as they
> are
> colokially called, operate on 76MHZ.
> I would be really surprised if you have one operating on the 200
> to 230MHZ
> band.
> The semen's models all operate on 76MHZ and most of the other
> major brands
> do as well.
> You might get a really cheap version operating on 900 megs, but
> mostly baby
> monitors, older cordless phones and wireless audio systems are up
> there.
> Many of the commercial wireless mikes operate on 600MHZ, or there
> abouts.
> If yours does indeed operate on 200MHZ, what is the model and
> maker? I would
> be surprised if it is operating in any designated band for that
> use.
> 73
> Colin, V A6BKX
>
> ----- Original Message -----
> From: "Jeff Kenyon" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Sunday, November 04, 2007 3:53 PM
> Subject: Re: thf-6a question
>
>
>> You might try the 900 MHz band, 902-928. They'll be phones and
>> baby
>> monitors and it is our 33 CM band, but I've heard those things
>> operating
>> there too and they work in wide band FM which is what the THF6a
>> can do in
>> t that band.
>>
>>
>>
>>
>>
>> On Sun, 4 Nov 2007, don bishop wrote:
>>
>> > I think there are several things there, but what I'm interested
>> > in
>> > is the frequencies for personal listening systems such as fm
>> > systems
>> > for people with hearing aids. I have a device transmitting
>> > there
>> > but not sure of the frequency and would like to find out
>> > exactly
>> > what it is with the thf-6a if I can. If I can start at a known
>> > frequency I can tune it in and figure it out if I know what the
>> > tuning steps are on that band.
>> >
>> > Don
>> >
>> >
>> > ----- Original Message -----
>> > From: "Jeff Kenyon" <[log in to unmask]>
>> > To: <[log in to unmask]>
>> > Sent: Sunday, November 04, 2007 2:27 PM
>> > Subject: Re: thf-6a question
>> >
>> >
>> > >I think it is narrow something like 12.5, but I'm not sure.
>> > >Do you
>> > >or
>> > > anyone hear anything on that band? I've never heard anything
>> > > there nor
>> > > here in Arkansas or back home except maybe some data.
>> > >
>> > >
>> > >
>> > >
>> > >
>> > > On Sun, 4 Nov 2007, don bishop wrote:
>> > >
>> > >> Does anyone happen to know the default frequency tuning step
>> > >> for
>> > >> the
>> > >> 216 MHz band (b band) on the thf-6a? I'm sure it's in the
>> > >> docs
>> > >> somewhere, but sure can't find it.
>> > >>
>> > >> Thanks,
>> > >>
>> > >> Don W6SMB
>> > >>
>> > >
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