From: arthur@onlinehome.de
To: rsgb_lf_group@blacksheep.org
Date: Tue, 13 Jul 2004 17:45:33 +0200
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Subject: Re: LF: Receivers
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Hello Jay, Hello all,

i was just looking for more information about the Harris RF-590 and 
found this page : 
http://www3.ctktv.ne.jp/~tadashi/RF590/RF590.PDF
Its a Block Diagam...
greetings
Arthur

> Harris RF-590:
> 
> * Good sensitivity down to 10 kHz
> * 10 MHz reference input
> * noise blanker works well
> * 4 agc settings + off
> * multiple filter positions
> * 1 Hz tuning steps
> * variable BFO pitch
> * calibrated signal strength meter
> * scan and other misc. bells and whistles
> 
> Only drawback I've found is filter "blow by" with very strong signals.
> Probably an easy fix - I just haven't got to it.
> 
> Jay, W1VD
> 
> 
> 
> ----- Original Message ----- 
> From: "WE0H" <we0h@genesiswireless.us>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Tuesday, July 13, 2004 12:14 AM
> Subject: RE: LF: Receivers
> 
> 
> > I run my TS 440 on 1750 meters and noticed it has similar sensitivity
> as my
> > HP 3586C Selective Level Meter. Good to hear another person using it
> even
> > lower and still having good sensitivity.
> >
> > Mike
> > WE0H
> > WD2XGI
> >
> >
> > -----Original Message-----
> > From: owner-rsgb_lf_group@blacksheep.org
> > [mailto:owner-rsgb_lf_group@blacksheep.org]
> > On Behalf Of Rik Strobbe
> > Sent: Monday, July 12, 2004 2:30 PM
> > To: rsgb_lf_group@blacksheep.org
> > Subject: Re: LF: Receivers
> >
> > Mike,
> >
> > I'm using a Kenwood TS440. Sensitivity is very good at 136kHz. A small
> > loop (1x1m) can be used without pre-amp, if I am using the TX antenna
> > for receiving I need at least 30dB attenuation before the LF
> > noisefloor is about 10dB above the RX noisefloor (so you are sure to
> > have full sensitivity - you can hear any signal that comes out of the
> > noise - and optimal IMD behaviour)
> >
> > 73, Rik   ON7YD
> >
> > Citeren Mike Dennison <mike.dennison@ntlworld.com>:
> >
> > > I am compiling a list of receivers and transceivers suitable
> > > for 136kHz. I know most of the older radios already but
> > > does anyone use a radio made in, say, the last five years
> > > that they use sucessfully? If so, does it need an LF pre-
> > > amp? Is the noise blanker any good on LF QRN and/or
> > > Loran? Is a narrow filter fitted as standard?
> > >
> > > Your help would be appreciated.
> > >
> > > Thanks
> > >
> > > Mike, G3XDV
> > > ==========
> > >
> > >
> > >
> >
> >
> >
> >
> >
> 
>