[HomeBrew] Using broadcast FM receivers.

[Larry Rappaport]

On Fri, 15 Jul 2005 17:19:10 +1000, you wrote (with possible editing):

>** Please do NOT cross-post messages when posting to HOMEBREW **
>
>I have a single-conversion broadcast-band FM tuner kit that works and I never 
>use.  What chance is there of converting it to the 146 MHz band as a monitor?  
>Sensitivity seems reasonable on about a metre (say a yard) of wire.  Would 
>the IF channel be too broad?
>
>Doug VK3KDI

No it wouldn't work very well.  Commercial FM is 75 khz wide (wide
band) while amateurs use narrow band - less than 7.5 khz wide.  Any
received stuff would be very weak in volume and you'd likely have
trouble with adjacent channel repeaters.  The fm capture effect would
still keep a single signal, but a strong adjacent channel might easily
overwhelm the unit.
--

73,
Larry W1HJF
rapp at lmr.com