[Milsurplus] ARC-2/2A stuff

[W2HX]

Thanks, Mike. Appreciate all the insight here. I am lucky that I have all the manuals with this particular unit so I'm good there. Yes, I don't expect much performance out of this rig, but it looks nice, works and will be fun to get on the air with it.

Thanks again for all the help
Eugene W2HX

-----Original Message-----
From: milsurplus-bounces at mailman.qth.net [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Mike Morrow
Sent: Thursday, May 23, 2013 11:49 AM
To: milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] ARC-2/2A stuff

> Thank, I'll get that ER!

Walt's ER article is interesting, but it won't be all that helpful, as the Maintenance Instructions that you can get from Robert/WA5CAB would be.  Don't try and find an original manual unless you want to spend about $100 for one.

>  Here are some pictures of my unit. Looks like an RT-91/ARC-2 data  
> plate.  Has metal knobs, has RF meter, does not have meter switch.

Your photos show **exactly** what I described in my 21 May post:

>> ...The only clear and obvious differences on the front panel of the 
>> original RT-91 and the RT-298 are:
>> 1.  The RT-298 does not have an RF amp meter function, so it has
>>     no meter switch.
>> 2.  The RT-298 added two fuse holders on the right side where the
>>     RT-91 has nothing.
>> 3.  The RT-298 uses plastic-body crank knobs in two places, while
>>     the RT-91 uses quality all-metal crank knobs.
>>
>> The RT-91 mods usually eliminated the RF amp meter function,
>> *sometimes* including elimination of the meter switch and plugging 
>> its hole.  Visual difference number 1 disappears.
>>
>> The RT-91 mods added two fuse holders in the same location as on the 
>> RT-298.  Visual difference number 2 disappears.

RT-91 units that escaped the partial RT-298 "upgrades" are rather rare.
I believe those are the most desirable units.  I don't care much for the RT-298.

> has RF meter

No.  Your unit has the RF amp meter function disabled.  The meter now shows PA current at all times.

> Also interesting to note that this one has been stamped "TYPE TEST 
> UNIT"

It was likely a maintenance shop unit.

> http://www.w2hx.com/x/ARC/ARC-2/

Not a bad looking example, and one that still has both ventilation screens and the associated spanner wrench.

Unfortunately, it is not a high performance unit, even when it was in service use, IMHO.  But it is attractive.

Mike / KK5F
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