[Boatanchors] BA's at Field Day

[Carl]

In 1965 I modified a 75A4 with 7360 mixers, 6GM6 RF, cascaded filters, gain 
equalization, SS AGC, audio mods and a bit more. It was HOT and held up well 
in contests paired with a 100V and NCL-2000.

In later years I had a couple of C Lines with Sherwood mods, cascaded, 
filters, etc and still used the 75A4 for serious digging on 160/80.

These days I have a pair of TS-940's modified to the hilt and the same 75A4 
when the going gets tough.

I have never had any other receiver come close and that includes a rebuilt 
and properly aligned R-390A.

The 940's and C Lines had tighter CW filters but the DX  gets lost in the 
noise and Ive been unable to pinpoint why. Im beginning to think it has 
something to do with product detector or audio chain noise.

Carl
KM1H




----- Original Message ----- 
From: "Rodger" <wq9e at dtnspeed.net>
To: "List Boatanchors" <boatanchors at mailman.qth.net>
Sent: Monday, June 30, 2008 9:17 PM
Subject: Re: [Boatanchors] BA's at Field Day


> Although it wasn't Field Day, I had my own experience with vintage gear 
> during a contest in the mid 90's.  At that time I had recently purchased a 
> new Yaesu FT-1000MP and added a full complement of Inrad filters for the 
> receiver.  I was operating in the CQ 160 meter contest using the MP, my 
> homebrew triple 4CX800 amplifier and a Hy Gain Hy Tower modified to work 
> as an inverted L on 160.  I was working plenty of NA and SA stations but 
> nothing from EU and a few hours in the contest I went inside to check 
> email and found I had an inbox full from EU stations complaining I wasn't 
> responding to their calls.  I then switched over to my tried and true 
> Drake C line (stock except for a narrow Sherwood CW filter) and started 
> working stations from across the pond.  At least on CW, the Drake could 
> follow a weak signal down into the noise and interference but the much 
> newer MP with its cascaded filters and and DSP could not do so.
>
> I just picked up an additional mint R-4C/T-4XC/AC4/MS4 loaded with extra 
> crystals, filters, and NB for $200 and I am thinking of now going back to 
> my original C line and adding some of the Sherwood mods to it.  You can't 
> computer control them and switching bands is a little slower but 
> performance wise the C line can still hold its on.  Just for fun I did 
> make a few FD contacts using my Ranger/Desk KW/SX-88 combo which is a 
> little large for field usage but it was the first time the SX-88 was used 
> in a contest in over 25 years since I just acquired and restored it after 
> it had been sitting in storage.
>
>
> Rodger WQ9E
>
>
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> _______________________________________________