boatanchor restoration - central electronics limited · boatanchor restoration bob sullivan, wØyva...
TRANSCRIPT
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Boatanchor RestorationBob Sullivan, WØYVA
Great Falls, VA
TX-350
32S-3A
HRO-500
Ranger II
Millen 90881
Collins KW-1
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Getting Started• Get going … pick SOMEthing …
• Assess tools, test equipment, parts
• Search for information
• SAFETY! Are you qualified?
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Information & Parts• Manuals: BAMA, manualman.com; [email protected]
• Reflectors: mailman.qth.net
• Electric Radio Magazine (ER): ermag.com
• QTH.com (reviews)
• Hamfests, Junque Box, eBay, QTH.com
• Traditional: Digikey, Allied, Newark, Mouser
• Hi-Tech Fasteners, Grainger, McMaster-Carr
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First Steps• Remember, there is no “right” way to restore
• Originality is in the eyes of the beholder
• Decide the extent of your restoration
• Research what others have done
• Cosmetic considerations (painting, silkscreen)
• Upgrade as you deem necessary Safety related (AC caps; line cord); electrolytics,
circuit changes, etc.
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The Details
• Every restoration is different
• Mandatory Tools/SuppliesVariac, Isolation Transformer, Polishes, Cleaners, Steel Wool, Dremel, Basic Test
Equipment, Tube Tester, etc …
• “Advanced” ToolsBead Blaster, Air Brush, Metal working, Ultrasonic cleaner, Punch Press, etc …
• Little things make the differencePolish knobs, plastic; replace hardware, etc
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Useful Tools
Heathkit Nut Starter
Screw Starter
Grabber
PolypusForceps
PickGood Source:Micromart.com
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More Useful Tools
Solder Sucker
Knurled NutDriver
TubePuller
LargeTweezers
Slotted ScrewHolder
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The Process• Take numerous “before” photos (and throughout)• Disassemble as much as practical• Wash and Clean EVERYthing• Polish and Paint (Best paint: Dupli-Color)• Test Tubes; Replace as necessary (Be careful!)• Replace electrolytics and coupling capacitors, out of
tolerance resistors, etc.• Test Transformers/chokes; clean and paint• Perform any modifications desired• Clean/lube switches, controls (DeOxit)• Lubricate mechanical assemblies (be careful!)• Replace line cord, AC bypass capacitors• Troubleshoot and modify; Test
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Painting• Paint as required; transformers, panel, cabinet• Touchup takes a lot of effort (Airbrush)• Prep is everything (bead blast, clean)• Excellent Spray Paint is Dupli-Color (Auto)• Use fast drying Acrylics; Wet or Powder?• Paint takes a few days to dry
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My Favorite “Stuff”• Blue Magic, Metal Armor, Wenol Metal Polish
• #0000 Steel Wool
• 50/50 Mixture of 409 and Ammonia
• GooGone
• Nevr-Dull
• PB Blaster(penetrating oil)
• Dust Off (air in a can)
• Tarn-X
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Hints and Kinks• Be careful unsoldering!• Lots of photos• Save everything• Attention to detail• Polishing knobs …
(Drill press, Blue Magic)
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A Great Tool …Get yourself an Apple iPad
It’s an invaluable “reassembly” tool
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Projects
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Projects
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Projects
Before
After
Visit my personal website for photos of my restorations;http://www.isquare.com/personal_pages/ras-hardware.htm
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Or … Build Something
A “simple” Balanced Low Frequency Tuner
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If you have metal working tools, make your own chassis. Or use a local
sheet metal shop.
Build the frame using aluminum angle and square
stock.
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Test fit parts
Paint chassis, inside and outside to your preference. Auto paint shops can be helpful.
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The final product with clear plexiglass cover in place.
Label using engraved plastic and double-sided tape.