[R-1051] Six pack attack

Thu Dec 12 15:55:00 EST 2019

Paul et., al.

The RF-110A amp can be powered by two different power supplies the RF-112 is the 3 phase and RF-124 is the 240 single phase. I've had both. The 112 is about as dense as a white dwarf (as in dying star). It is deceptively and incredibly heavy. Two person lift for two very strong men. The RF-124 is twice the size of the 112 but much lighter. 

Manual to the RF-124
http://w2hx.com/x/URT-23/RF-130/Harris%20RF-124-K7JL.pdf

Here is an example of the RF-112
https://www.ebay.com/itm/362787302723

here's a picture of the set with the RF-124 (single phase) ps (and the 1310 exciter)
http://www.columbiaelectronics.com/121c2350.png

and finally a picture of the set with the RF-112 PS but the T-827 exciter.
http://www.columbiaelectronics.com/142b3160.png

And a photo of one of my sets with the RF-124 and a URC-35A sitting on top.
http://w2hx.com/x/New%20Shack/URT-32%20and%20URC-35.jpg

And for good measure, my RF-1110B (FET) Amp
http://w2hx.com/x/Harris/RF-1110B/AMP/0527161841.jpg

and the RF-1124 Power supply
http://w2hx.com/x/Harris/RF-1110B/0520161344_HDR.jpg

Regards
PS Ray! You should talk! hihi

-----Original Message-----
From: r-1051-bounces at mailman.qth.net <r-1051-bounces at mailman.qth.net> On Behalf Of paul swed
Sent: Thursday, December 12, 2019 12:29 PM
To: R-1051 Discussion Group <r-1051 at mailman.qth.net>
Subject: Re: [R-1051] Six pack attack

I worked on the URT-23 also. One heck of an amplifier that can happily do RTTY 100% forever.
What I do not recall are the mains. I thought ours were 220 3 phase. I see Ray says its single phase thats a rare find I believe.
Buttttt and there is always a but. The amplifier chain is 2 X RCA 8122s feeding 2 X 4CX1500.
All if they can be obtained are expensive if there is an issue. Not sure the 8122s can be obtained.
With respect to the fans I hated the 400 Hz whiners. During GQ I was stationed in the transmitter room do you know how hard it is to sleep on shredded crypto bags with that noise.
So with that all said it depends on the price/gamble.
Must be 15 years ago or more Fair radio had them for $1500. By the time I called they were gone and I called pretty quickly. So much for having one.
But how on earth would I have ever dealt with 3 phase? I know there are ways with motors and such. Just an entirely nasty solution.
Regards
Paul
WB8TSL

On Thu, Dec 12, 2019 at 11:31 AM W2HX <w2hx at w2hx.com> wrote:

> Personally, I really love the URT-23 despite the excessive fan noise. 
> I've owned a few in the last 20 (or more) years. Not really sure why I 
> love them so much. Maybe the way they look. I've spent countless hours 
> debugging and repairing them and enjoyed that activity. I've used them 
> with T-827s and RF-1310s. I have one right now in the shack and I have 
> a solid state (FET) version of the RF-110A called the RF-1110B with 
> 1310 etc. The 1110B need some work but I am encourage that it will be less noisy.
>
> -----Original Message-----
> From: r-1051-bounces at mailman.qth.net <r-1051-bounces at mailman.qth.net> 
> On Behalf Of Ray Fantini
> Sent: Thursday, December 12, 2019 11:23 AM
> To: R-1051 Discussion Group <r-1051 at mailman.qth.net>
> Subject: Re: [R-1051] Six pack attack
>
> I have options to pick up a URT-23 transmitter with that exciter and 
> the antenna coupler, the signal phase one no less. But I would have to 
> trade my first born and have to wonder if it would be worth it. One 
> thing I do have and like playing around with is the Harris Navy 
> version of the RF-590 receiver and if I can come across the Harris 
> exciter that matches that receiver may have to reconsider. But 
> fortunately don't have any line on the exciter!
>
> Ray F/KA3EKH
>
> -----Original Message-----
> From: r-1051-bounces at mailman.qth.net <r-1051-bounces at mailman.qth.net> 
> On Behalf Of paul swed
> Sent: Thursday, December 12, 2019 11:10 AM
> To: R-1051 Discussion Group <r-1051 at mailman.qth.net>
> Subject: Re: [R-1051] Six pack attack
>
> I should add the T-827 is a great little 1/4 watt exciter. But that is 
> one heck of a lot of power for a 1/4 watt. I have a SC-901 transceiver 
> and it works great but adding a larger amplifier chain is silly. (Not 
> that hard to do but with multiple 100 watt transceivers no reason to 
> do it) Regards Paul
>
> On Thu, Dec 12, 2019 at 11:07 AM paul swed <paulswedb at gmail.com> wrote:
>
> > That is correct. The 6 pac and RF deck are supposed to be interoperable.
> > I did run into a issue on the 6 pac from an A to a B they are not 
> > interoperable as a heads up watch out.
> > Regards
> > Paul
> > WB8TSL
> >
> >
> > On Thu, Dec 12, 2019 at 10:51 AM Ray Fantini 
> > <RAFANTINI at salisbury.edu>
> > wrote:
> >
> >>
> >> A friend of mine has several T-827 exciters and is questioning 
> >> their value. Correct me if I am wrong but the 827 uses the same six 
> >> pack as the
> >> R-1051 at least the AB and C series, the same turret RF section and 
> >> the same oscillator reference assembly so going to assume that 
> >> there are a lot of useable components for support the receiver in the exciter.
> >> At least that's how it appears to me.
> >>
> >>
> >> Ray F/KA3EKH
> >>
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