The Southeastern AM Radio Club

The Southeastern AM Radio ClubThe Southeastern AM Radio ClubThe Southeastern AM Radio Club
  • samrc
  • Membership List
  • Founding Principles
  • Swap Shop
  • Great Events Part One
  • Great Events Part Two
  • Restorations Pt.1
  • Shack Photos
  • Gatherings Coming Up
  • Strays and Wanderings
  • Resources and Links
  • Mack's Restoration BC 1T
  • Restorations Pt 2
  • Restorations Part 3
  • Restorations Part 4
  • Restorations Part 5
  • More
    • samrc
    • Membership List
    • Founding Principles
    • Swap Shop
    • Great Events Part One
    • Great Events Part Two
    • Restorations Pt.1
    • Shack Photos
    • Gatherings Coming Up
    • Strays and Wanderings
    • Resources and Links
    • Mack's Restoration BC 1T
    • Restorations Pt 2
    • Restorations Part 3
    • Restorations Part 4
    • Restorations Part 5

The Southeastern AM Radio Club

The Southeastern AM Radio ClubThe Southeastern AM Radio ClubThe Southeastern AM Radio Club
  • samrc
  • Membership List
  • Founding Principles
  • Swap Shop
  • Great Events Part One
  • Great Events Part Two
  • Restorations Pt.1
  • Shack Photos
  • Gatherings Coming Up
  • Strays and Wanderings
  • Resources and Links
  • Mack's Restoration BC 1T
  • Restorations Pt 2
  • Restorations Part 3
  • Restorations Part 4
  • Restorations Part 5

Restoration of RCA AR-88

WB4GWA

After years of being stuck in a rack, I decided to restore my RCA AR-88 receiver.   RCA built this receiver between 1941 to 1945 and it was used  during WWII at the "so called" Y stations and other listening posts.   The AR-88 is a 14 tube superhet covering .54 to 32MC in six bands.   


This page will document the work I had to do to restore the radio to its rightful place as a valuable part of radio history.   Keep checking as I add videos.

The Process Begins.

This front panel is very heavy.  It is solid steel and probably 1/8 inch thick.  If you decide to work on an AR-88 make sure you have a solid bench.   The chassis is about 75 pounds.  And inside the cabinet it weighs in at 100 pounds.  The one I have is a Navy receiver.  I sure wish I knew where it had lived most of its life....

A Look at the Underside

The coils are covered with a steel plate which has been removed for cleaning.  The bottom of the chassis is very well shielded and very solid.

Front of the Radio

A couple of do's and don'ts....  When you get ready to clean a radio, always test chemicals on a spot that is out of sight.  And never, never use any kind of chemical on the dials.  You will wreck the lettering.  Even water can destroy ink that is water soluble.   You can clean the back of the dials with a damp, soft cloth, but never the front.   On the front of the dials simply use a soft cloth and lightly brush away any dust.  

Cleaning the Receiver

Years of dust, grease, spider webs, and general crud needs to be removed.  I chose not to bead blast the chassis because of the lettering on it.  Just a thorough cleaning and she looks much better.   I failed to mention in the video that you can also get grease off with WD-40.  I have used it a lot.

Stuff you just have to do

You start to discover just how bad some folks are at "fixing" radios.  You can probably spot these cold solder joints or just generally bad soldering.  No kidding, I am repairing dozens of joints that look like someone used a blow torch and acid solder......

Every bypass capacitor was bad.  I used my Carlson capacitor checker and not a single one showed any promise.  So new caps are going into it.  And I have found some resistors that are way out of tolerance.  Just stuff to expect when you are working on an ancient old boat anchor.  

Anomalies

It is not unusual to find problems in old radios such as components missing or added where they should not be.  Previous owners do strange things sometimes.

Top View

The large cap has been drained of its oil but replaced to add authentic look to the chassis.

The completed Project

Sounds great...  Mack and Norm are chatting....

I swept the IF section with my IFR and got the selectivity curves just right according to the manual....  Will be fun to listen to not only the ham bands, but shortwave as well.


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