In a message dated 09/06/2006 12:35:12 GMT Standard Time, [email protected] writes:

Thanks for that.  It certainly helps _me_.   I have a 706/2/g but no 850.

The front end of my 706 is so wide it recieves all the world at the same

time !  but I am only one mile from a MW broadcast station .

  I can see I need at least a V.  narrow tuned pre-amp.  Any ideas where to

find one? [ Newbury Rally next week ]

 
Hi.
 
The G3YXM / G0MRF pre-amp is fairly narrow. It certainly offers good rejection of MW.
But it is 50 ohms ish in and out.  - I think some simple response tests are listed on the web site.
 
Another possibility would be a tuned input FET which could be made a higher Z input.
 
73
 
David  G0MRF
 
www.g0mrf.freeserve.co.uk