[PCR-1000] PCR-1000 Front end overload

[R. J. Grasser]

N3WZ,

I know what the manual says, but it works just the same in real use. They
cant write owner manuals for every possible use.  It depends on what your
total config is and how it interacts with the rest of the system. No that is
the proper model number that I use.  Tried the MFJ-956, and MFJ-1046 and
find them lacking to what matches my specific system hardware since I NEED
to get to 54 Mhz.

I use the H-800 active antenna system from LF Engineering, plus the "new"
and "improved" ST-2 broadband dipole array.

Ex-W8BRD, VQ9AJ (Mahe), VP5RG, and the "English speaking service" of TU2AA
for many years. :-) General license in 1956.

Regards, RJ (rgrasser at frontiernet.net)


----- Original Message -----
From: "Cyberia" <cyberia at edurostream.com>
To: "'Discussion of PCR-1000 by Icom'" <pcr-1000 at mailman.qth.net>
Sent: Monday, September 06, 2004 6:33 PM
Subject: RE: [PCR-1000] PCR-1000 Front end overload


RJ, you mention "notch filter" as a function of the MFJ-1045C. The manual
http://www.mfjenterprises.com/man/pdf/MFJ-1045C.pdf does not show such a
function. It appears from the manual to be a narrow bandwidth amplifier (the
opposite of a notch filter).

Are you really able to use it this way - or maybe you got the model number
wrong in your post?

N3WZ - Jim

-----Original Message-----
From: pcr-1000-bounces at mailman.qth.net
[mailto:pcr-1000-bounces at mailman.qth.net] On Behalf Of R. J. Grasser
Sent: Monday, September 06, 2004 5:09 PM
To: DB Nicholson; Discussion of PCR-1000 by Icom
Subject: Re: [PCR-1000] PCR-1000 Front end overload


First off ground your radio at the "in ground" side of your water pipe. Your
house wiring, or the power meter may not be anything more than a "floating
ground".

If you have the money, buy an MFJ-1045C active preselector ($67.00 on the
web), as it has a very sharp cutoff notch filter.

We also have a 50 KW station about 7 miles from us, but using the 1045C in
conjunction with my H-800 active antenna (10 Khz to 50 Mhz) from LF
Engineering, and my ST-2 broadband vertical array (30 Mhz to 1.3 Ghz), I can
totally eliminate the offending AM station, and its images/harmonics.

RJ (rgrasser at frontiernet.net)

Rochester, NY
----- Original Message -----
From: "DB Nicholson" <d_nicholson at bellsouth.net>
To: <pcr-1000 at mailman.qth.net>
Sent: Monday, September 06, 2004 12:09 PM
Subject: [PCR-1000] PCR-1000 Front end overload


I live less than 3 air miles from a 50kw AM station (WBT - 1110).  Front end
overload makes AM band reception useless.  I am using a longwire abt 30'
above ground.  Radio is grounded using the house ground at power meter.
Someone once suggested using an RC filter to shunt 1110 to ground, but I'm
not sure what components to use, etc.  Any help would be appreciated! TIA,
Dave Charlotte, NC
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