MORNING STAR OBSERVATORY
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Knight-Kit T-60 AM/CW Transmitter

This is a Knight Kit T-60 Novice transmitter from the 1960's. It is a CW and AM transmitter and uses a 6DQ6A as the output tube. Knight advertised this transmitter with their R-55(A) receiver as a Novice-class station.

Picture
The front panel as found. The two chicken head knobs are not original. The original knobs are cheap plastic and over tightening the set screw on the shaft can cause them to crack. The Band switch knob is also cracked and spins on the switch shaft. The fix is to fill the back cavities of the knob with epoxy, but unfortunately, a former owner already replaced the two other knobs with the chicken heads..

Picture
A look at the top of the xmitter before cleaning and repairs. Not in too bad a shape, just a couple of tube shields missing and one tube has been substituted.

Picture
Under the chassis is relatively clean. The old electrolytic capacitors will be replaced but the other capacitors don't appear to be paper, so they'll be tested and left if good.

Picture
Picture
Picture
In the left pic someone made a hole in the back of the chassis and did a really sloppy job of it. In the middle are some bad solder joints on the switch and in the third pic there is a gray wire not soldered to the terminal strip.

Picture
Picture
Picture
To keep the top looking as original as possible the old 20uf electrolytic capacitor was disassembled, the ends cut off, and then soldered onto the replacement capacitors leads. The new capacitor was then reinserted into the old shell.

Picture
Under the chassis after repairs. Wires with melted insulation on the ends were trimmed back where possible and insulating sleeves were slipped over others. Bad solder joints were cleaned and resoldered.

There was an errata sheet from Knight with some changes that had never been applied to this transmitter so these were done as well.

The holes in the chassis back was epoxied shut. A lot of the screws had the lock washers under the screw head instead of the nut so these were all changed.


Picture
The transmitter after cleaning and repairs. Tubes were checked and the one incorrect tube replaced. The solder joints and melted insulation on the top wiring were also repaired. New tube shields have been installed and the hole in the back of the chassis repaired.

Picture
Reassembled and ready to go on the air. A quick test into a dummy load showed about 45 watts forward power.

Last updated 12/22/2021
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  • Home
    • About
    • Contact
  • Astrophotography
  • The Observatory
    • The New Observatory
    • - About the ExploraDome
    • - About the Lancaster Dome
    • - Building the Lancaster Dome
  • Equipment
    • CCD Cameras >
      • Orion Starshoot Pro
      • QSI 683WS
      • ZWO ASI-178MM
    • Eyepieces
    • Filters
    • Mounts >
      • Orion HDX-110 (EQ-8) >
        • New HDX-110 Setup
        • Orion HDX110 EQ-8
    • Observatory Computers
    • Telescopes >
      • Astro-Tech AT6RC
      • Celestron C-11 XLT
      • Zhumell 152mm Refractor
  • Projects
    • Arduino Focuser
    • C11 XLT Mods
    • Orion SSPRO Camera >
      • Disassembled Views
      • Noise Reduction Mod
      • Temp Controller Mod
    • Ultima 8 Mods
    • Zhumell Refractor Mods
  • Non-Astronomy
    • Amateur Radio >
      • Boat Anchor Radios >
        • BC-348N Receiver
        • Collins 51J4 HF Receiver
        • R-392 HF Receiver
      • DIY >
        • Station Boom Microphone
      • Ameco >
        • Ameco AC-1
        • Ameco OCM
        • Ameco PT-2
        • Ameco R5A
      • Heathkit >
        • Heathkit SB-102 Station
      • Knight-Kit >
        • Knight Kit Span Master II
      • Yaesu FT-817 >
        • Yaesu FT-817ND
        • LDG Z-817 Autotuner
        • Windcamp LiPo Battery
    • Antique Radios >
      • Building A Radio Workbench
      • Radio Dial Neon Clock
      • Radios >
        • 1938 Zenith 6-S-254
        • Echophone EC-1
        • Eltz Radione 2
        • Panasonic RF-5000A
        • Silvertone Model 4465
    • Geiger Counters >
      • AN/PDR-27G Radiac Set
      • Lionel CD V-700 Geiger Counter
      • RCA WF-12A Geiger Counter
    • Test Equipment >
      • DIY Test Equipment >
        • DIY Curve Tracer
        • DIY Signature Tracer
      • Military Test Equipment >
        • BC-221-AF Frequency Meter
        • LM-21 Frequency Meter
        • TS-323/UR Frequency Meter
        • TS-465 C/U Sweep Generator
        • TS-505D/U VTVM
        • TV-3C/U Tube Tester
      • Tube Testers >
        • Alternating Current Sink
        • Drug Store Tester
        • EMC Model 200 Tube Tester
        • Hickok Model 6000A Tube Tester
        • Hickok OZ-1 (550X)
        • Precise Model 111 Tube Tester
        • Precision Model 10-12
        • Supreme Model 385
        • TV-3C/U Tube Tester
      • VTVMs and Multimeters >
        • B&K Model 290 Hi-Low FET Multimeter
        • Hickok 225K VTVM
        • McMurdo Silver VOMAX 900
        • Micronta 22-220 FET Multimeter
        • Simpson 360-2 Digital FET DMM
        • TS-505D/U VTVM
      • Hickok >
        • Hickok 19X RF Generator
        • Hickok 225K VTVM
        • Hickok 288X RF Generator
        • Hickok OZ-1 (550X)
        • Hickok 6000A Tube Tester
      • Simpson >
        • Simpson 360 DMM
        • Simpson 360-2 DMM
        • Simpson 480 Genescope
      • Supreme Instruments >
        • Supreme 385 Automatic
        • Supreme 560 Vedolyzer
        • Supreme 560A Vedolyzer
        • Supreme Model 561 AF/RF Generator
        • Supreme's Model 562 Audolyzer
        • Supreme Model 562 Audolyzer circa 1941
        • Supreme Model 562 Audolyzer circa 1946
        • Supreme Model 563 Audio Generator
        • Supreme Model 576 RF Generator
      • Other Test Equipment >
        • Heathkit IT-28 Capacitor Tester
        • Rider 162 Chanalyst
        • Tektronix 326 O'scope
        • VU-Data Model 941B Oscilloscope
    • ---------------
    • Fossils
    • Rocks and Minerals
    • Star Trek >
      • Star Trek Rock Mood Lamp
      • Star Trek Communicator