> |> > I often hear a simulcast of Tampa, Florida broadcast station WFLA
> |> > in the Toronto area on 25,870 KHz, using narrow-band FM. The
> |>
> |> I have heard this as well and find it puzzling. I tuned it on 25,870 kHz AM
> |> and it sounded pretty good. I heard it this last friday, Dec 18 at 2130 UTC.
> ^^^^^^^^^^^^^^^^^^^^
> This is probably due to _slope detection_, whereas the edges of the passband
> filter (as attenuation increases the futher you move away from the center frequency) act as a crude FM discrimator (varying voltage output as frequency
> changes).
> |>
> |> Ron Synowicki
> |> tmrdpsrs@engvms.unl.edu
>
> --
> John C. Kay Motorola
> kay@motcid.rtsg.mot.com Cellular Infrastructure Group
> Amateur Radio Callsign WV9T Arlington Heights, IL
I heard WFLA again today at 2130 UTC...very strong. I tuned it in both AM and
FM modes, and the FM was much better.
That's only part of the fun, however. I called WFLA and talked to the station
engineers while I was listening. Their names are John and Paul. They're
both really nice guys...they went and said hello to me on the air and
everything. I talked to them about their transmission and it's true that it
serves as a feed for the traffic helicopter. They are only running 75 Watts!
They also said they were using a 5/8 whip antenna (i'm not sure if i described
that correctly, somebody correct me if i'm wrong).
I encourage anyone hearing their broadcast to call them at (813) 839-9393 and
ask for engineering...it's a blast!...
their address for QSL:
WFLA
4002 Gandy Blvd
Tampa, Florida
33611
P.S.---Paul told me that I was slope detecting their signal when using the AM
mode...and it still sounded good, but not as good as FM.