[600MRG] KL7AJ QST article

[Lee Mushel]

Several years ago it was explained to me that as an ARRL Life Member of more 
than 50 years I was entitled to go to the mail box to receive my QST with 
the honor of being alone.   Thus I would receive my magazine last.   My 
April issue has not yet appeared yet the topic is of some considerable 
interest to me.   I take a lot of pleasure, as I think do most 600 meter 
experimental folks, in building things.   This experiment certainly gives us 
great opportunity to do that!

Of course we have to have low pass filters to get rid of the broadcast band 
images and a preamp is certainly good.   And the "Ultimate 3" kit sits here 
patiently waiting for me to begin construction after I recover from the 
Wisconsin Winter.

But sometimes I think that people might never have had the pleasure of 
operating a Software Defined Receiver where you can, for example, listen to 
CW with a filter that can easily move from 3 kHz to ten hertz instantly with 
no effort!  Yes, you will have to build an "up-converter" but that's nothing 
but more fun.   During a recent CW contest weekend when I could watch a band 
with over 160 frequencies in operation I tuned to those stations with no QRM 
and virtually none of the "ringing" one might expect!  Just pure CW with a 
"black" background. Wonderful!

Just another exciting thing to try on ham radio.

73

Lee   K9WRU
----- Original Message ----- 
From: "Rudy Severns" <n6lf at epud.net>
To: "600MRG" <600mrg at w7ekb.com>
Sent: Wednesday, March 12, 2014 12:03 PM
Subject: [600MRG] KL7AJ QST article


> For boat anchor receiver owners there's a nice article on the adjustable 
> crystal filters which appeared in late WWII and postwar receivers  by 
> Eric, KL7AJ, in the April QST, page 42.  Unfortunately all my boat anchors 
> are too old to have that "modern" amenity.
>
> 73, Rudy
>
>
> _______________________________________________
> 600MRG mailing list
> 600MRG at w7ekb.com
> http://w7ekb.com/mailman/listinfo/600mrg_w7ekb.com
>
>