[ARC5] Inspired hack job

[Geoff]

It all boils down to what you expect to listen to.

With the slugs set for maximum selectivity it is fairly sharp for CW. At 
minimum selectivity it is fine for NDB's.

At no point is it good for AM if you want to chase LF BCB DX and it is 
marginal for SSB where there is often one of the experimental stations in 
the 475-495 and 505-515 region. Of course you can swamp the IF's with 
resistors to broaden the response but that would be considered a hack by 
them funny talking purists.

For its size nothing can beat it but there are better choices, even military 
surplus such as the SRR-11/FRR-21. But complexity and servicability problems 
increase dramatically.

The Hammarlund BC-779 (SP-200LX) does cover 100-400 KHz in 2 of its bands 
and has continuously variable selectivity plus Hammies great crystal filter. 
Price is about the same as a clean BC-453.

Carl



----- Original Message ----- 
From: "Robert Eleazer" <releazer at earthlink.net>
To: <arc5 at mailman.qth.net>
Sent: Wednesday, March 06, 2013 7:08 PM
Subject: Re: [ARC5] Inspired hack job


> You know it occurs to me that you would have considerable difficulty in 
> finding a receiver that would do a better job over the 190 -550 KHZ range 
> as compared to an ATA, BC-453, R-11A, or others of that series.
>
>
> I very much doubt the ADF sets, either WWII vintage or more modern, would 
> do as well as a BC-453 or its LF brethren.  After all, the 453 was 
> designed for com use on the control tower frequencies, not driving an 
> indicator.
>
>
>
> I have not done a comparison, but I doubt a BC-348 can hold a candle to a 
> BC-453.  I built a Tec Tec receiver kit some years ago that covers 100 
> KHZ -30 MHZ; it cost me $200 in kit form and is a nice design, but its 
> performance at the lower frequencies was just terrible.
>
>
>
> Unless you are talking something like an R-389, I doubt that even today 
> you could do better than a BC-453 for 190 - 550 KHZ, and mostly not as 
> well.
>
>
>
> Given the gradual Federal abandonment of NDB's the 453 may just be the 
> best thing ever produced for that band and the best thing that ever will 
> be produced in significant quantities.
>
>
> Wayne
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