[time-nuts] Re: of possible interest (modulation of IRIG onto 10 MHz reference)

[Joseph Gwinn]

On Sun, 29 Aug 2021 03:30:23 -0400, time-nuts-request at lists.febo.com 
wrote:
Re: time-nuts Digest, Vol 208, Issue 23 (Msg 10) 

> Date: Sun, 29 Aug 2021 14:33:24 +1000
> From: Julien Goodwin <time-nuts at studio442.com.au>
> Subject: [time-nuts] Re: of possible interest
> To: time-nuts at lists.febo.com
> 
> On 21/3/20 6:07 am, djl wrote:
>> 
>> https://www.sv1afn.com/en/products/vhf-uhf-triplexer-1.html
>> 
>> 10 mhz and uhf/vhf on same cable.
> 
> I've pondered if IRIG modulated on 10MHz would make enough sense to
> work, or if the modulation would end up degrading the 10MHz enough to no
> longer be a good reference.

I've done similar things, and yes, it can work.

AM has the least effect, but IRIG has a 3:1 voltage amplitude range, 
so the signal power range is 9 dB, which may or may not matter in 
your application.

One can also use phase modulation and a Costas-loop demodulator.

Joe Gwinn