[MRCA] 10-Meter FM

[mac]

Just pulled up Part 97.  97.307 (f)(1) lays out the prohibition on  
angle-modulated signals with a modulation index greater than 1.  In  
the accompanying frequency chart, however, para (f)(1) is NOT listed  
as applying to phone 29.0 - 29.7 MHz.  It IS listed as applying to all  
phone operation below 29.0 MHz however.

Dennis D. W7QHO
Glendale, CA

**************

On Dec 16, 2010, at 9:09 PM, mac wrote:

> Last time I checked the FCC rules the higher that 1 mod index OK 29
> MHz and above.
>
> Dennis D. W7QHO
> Glendale, CA
>
> ************
>
> On Dec 16, 2010, at 8:56 PM, Gene Smar wrote:
>
>> Al et al:
>>
>>    Before we jump into 10 FM using milrads, remember:  these old
>> green
>> radios are wideband FM.  That modulation is not permitted on Ham
>> freqs below
>> 30 MHz.  We can get away with it on 6M and above.  I'll check the
>> FCC Rules
>> over the weekend (it's nearly 12M here now.)  But IIRC, the Rules
>> section on
>> permitted modulation describes the math used to determine index of
>> modulation or some such thing which must be less than 1 below 30 MHz.
>
> ______________________________________________________________
> MRCA mailing list
> Home: http://mailman.qth.net/mailman/listinfo/mrca
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:MRCA at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html