[Lowfer] Harris RF-590

[James M. Walker]

The filters will stabilize out and not be susceptible to adjacent channel
interference if you put the receiver in a cabinet. That also holds for the
temperature at operating levels. It was designed to be operated in a
closed system of air circulation. Either a 6 foot rack cabinet with the
rest of the system , ie 1310, RF7410 remote control devices etc; if you
just have it sitting out on a desk, it is very susceptible to thermal 
changes.

The units work inside "zero" racks and regular racks, the systems in
Saudi Arabia, are still functioning without much going on in the way of
maintainance. There were even systems mounted in the back of "Blazer"
trucks, the only complaint from operators was, they needed to keep the
air conditioner in the vehicles running all the time. The RF-590, RF11310,
and the RF1130 PA were considered a mobile station for forward area
Command and Control capabilities. FWIW

In a civilian environment, if you get a chance to tour some of the Embassies 
in
D.C. (Foreign) you will find them in a "regular" setting, but even there 
they are
in a rack configuration, it just doesn't look like it.

Jim
WB2FCN

----- Original Message ----- 
From: "Jay Rusgrove" <JRusgrove at comcast.net>
To: "Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands" 
<lowfer at mailman.qth.net>
Sent: Saturday, March 03, 2007 9:24 AM
Subject: Re: [Lowfer] Harris RF-590


>> What do you like about the Harris RF-590 ?
>
> Bulletproof front end - simultaneious high power operation on different 
> band presents no problem. 10
> MHz reference input for dead nuts frequency accuracy. Military grade 
> construction and reliability.
> Only negative is filter blow by but I don't use it as a contest receiver 
> so it doesn't matter for
> what I'm doing. Haven't investigated the source of this problem. Would 
> guess some improvement could
> be made in the filter switching but since it only has one set of 
> mechanical filters the stopband is
> only going to be 80 or 90 dB. A second set of filters would be required 
> for further improvement.
>
>> Tuning steps down to 1 Hz ?
>
> Yes
>
>> Sensitivity below 500 KHz ?
>
> As good as at HF
>
>> AC power requirement ?
>
> Requires AC...and a fair amount of it. Helps heat the house in the winter 
> ;~)
>
> Jay
>
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