[INRAD] filter comparison

[Saandy]

...definitely agreed with that.
The only difference is the skirt selectivity- that's what we called it
during the skirts' heydays.
Even this is a little dependent on preference: I, for instance, am a hunter,
looking up and down the bands. In these conditions, signal come up gradually
as they approach the filter's passband, instead of popping up aout of the
blue. You get some forewarning of their existence and it kind of convenient.
I can always use the VBT to clean up interference if something really
interesting crops up if the band is crowded, the Inrad filter helps,
otherwise I found not any earth shattering differences!
Alex	4Z5KS

-----Original Message-----
From: Zoli Pitman HA1AG [mailto:ha1ag at yahoo.com] 
Sent: Wednesday, September 13, 2006 11:36 AM
To: Anders Janis SM4RNA; Saandy; 'Bill Tippett'; list at inrad.net
Subject: Re: [INRAD] filter comparison

Hello Anders et al,

> If you mean the Murata, you could buy the one that I
> removed from a IC-746 
> and put in a INRAD 2,4 kHz in instead, but it seems that
> I did not bother to 
> keep it. It seems like I put it just  just where it
> belongs. In the garbage  bin.

It's a bit too harsh statement IMO. The Muratas are not bad
for their size and for their price. I replaced mine in the
2nd RX of my MP (with a INRAD 455/2000) and measured the
params of both filters with proper matching (wound the
transformers for both sides). I started to publish the
findings on my web-site but have not finished it
completely. It is still on my to-do list and will be done
within a few weeks. 

Actually the INRADs are sharper on the side and it gives
you a difference between 2 and 4 kHz from ur RX freq on
both sides. It is just a fact of physics nothing else.
Unless you use big antennas in a crowded RF environment 
you will hardly notice the difference. But this is my
subjective opinion.

73, Zoli HA1AG
www.hg6n.hu/ha1ag

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