{Collins} Re: My S'line



The greatest concern will be the electrolytic filter capacitors. If this
were my situation, and since the units haven't been powered up in 40 years,
I would replace the filter caps in the power supply before powering up.

K5MIL
----- Original Message -----
From: <dgsvetan@xxxxxxxxxxxxxxxxxxx>
To: <NAGY73s@xxxxxxx>
Cc: <COLLINS@xxxxxxxxxxxxx>
Sent: Monday, June 25, 2007 5:09 PM
Subject: {Collins} Re: My S'line


> Al,
>
> Congratulations on retirement and having hung onto your S-Line.
>
> You don't say how long you have been on this reflector, but discussions
> about bringing up gear that has been stored for many years have been
> frequent.  Bear in mind that except for dust and possible corrosion, there
> might be nothing wrong with any of it, but you have to be careful.
> Insulation and electrolytic capacitors can be affected by heat during
> storage.  Care that should be taken with powering up the stuff after
> decades of storage. You can very well do the check out yourself if you
> have patience and a few pieces of test equipment.  If your equipment has
> truly been stored for 40 or so years, then:
>
> 1.  Examine each piece for any loose items inside and any signs of visible
> corrosion.  Clean out dust and any debris.
>
> 2.  Check condition of all power cords and chassis wiring.  Many times,
> the AC power cords will harden and crack.  Those must be replaced.
>
> 3.  As a minimum, I would plan to have on hand a Variac (tm) or equivalent
> adjustable power line transformer because you do not want to throw full
> line voltage on any of the units when they have been inactive that long.
>
> 4.  Other useful instruments are a VTVM or DMM, signal generator, dummy
> load, wattmeter, and oscilloscope.  Hopefully, you still have your
> manuals.
>
> There are several steps and procedures that should be done, and those have
> all been discussed many times.  Check the CCA reflector archives.  Keep in
> mind that the tubes have not accumulated any hours in those dead years, so
> they should be good if they were OK when you packed up the gear.  It is
> true that resistor values can and will change over time, whether the radio
> has been in use or not, and there can be changes in the values of certain
> capacitors.  So, realignment might be needed, but you don't really know
> until the sets are powered up and running.  Also, some caps can get
> electrically leaky and cause circuit malfunctions.  Don't forget about
> cleaning switch and relay contacts.
>
> Best wishes and enjoy the reasons that you kept the gear all along.
>
> 73, Dale
> WA9ENA
>
>
>
>
>
> NAGY73s@xxxxxxx
> Sent by: collins-bounce@xxxxxxxxxxxxxxxxxxxxx
> 06/25/2007 05:28 PM
> Please respond to
> NAGY73s@xxxxxxx
>
>
> To
> COLLINS@xxxxxxxxxxxxx
> cc
>
> Subject
> {Collins} My S'line
>
>
>
>
>
>
> After forty years of packed away S'line and I now am retired, I have
> decided
> to assemble my station once
> again.
> I any can help me with good repair stations for alignment and  servicing
> for
> my 75s and 32s please let me know.
> Sincerely Al Nagy  WA8CCU
>
>
>
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 NETS: Tues & Thur: 3.805 MHz-2000 Central + Fri: 3.895 MHz-2000 Pacific
  SUNDAYS: 14.263 MHz-2000 UTC  +  AM Net: 29.050 MHz-1200 Central
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