K9STH

k9sth@sbcglobal.net


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History of K9STH:

Photographs of Antennas;

Current Shack Photographs:

Photographs of older shacks:

More older shack photographs:


New restorations and acquisitions:

More recent restorations:

BC-312M rebuild:

BC-1004 rebuild:

QSL Cards older and current:


Photographs of receiving converter collection:

Converter collection:

Photographs of some of the antique radios

Antique Radio Collection:

Articles

Collins S-Line / KWM-2 ceramic trimmer repair:

FCC Telephone Interference Study: 

6146 Family of tubes:

                    RCA tube advertisements

Apache audio modification

                    Schematic

Mohawk 12 meter conversion

               Who invented radio

Off the shelf paint for Heathkit:

               Boat Anchor Paint Formulas

               Velcro cable wraps

Heathkit DX-100 official modification and other service information:

Heathkit SB-Line LMO rebuild:

Collins KWM-2- series tube socket voltage / resistance charts:

Grounding Articles              

Lightning protection 

 Radio Frequency Grounding

Diagram 1

Diagram 2


Misc. Articles:

Remember when (nostalgia)    

               More Remember When (nostalgia)

Using television baluns to improve receiver sensitivity

Vertical dipole / rotatable dipole for 6 and 10 meters

Home Brew coaxial switch for 160 through 10 meters

                  Photographs of switch construction

The Great Tavern Caper (humor)

              A dB is a dB is a dB (educational)

              Olde Tyme QSL artwork (Right Click on photograph and download to your computer)
                    
Walter Ashe Card instructions
Walter Ashe style card (new artwork)
Walter Ashe card (scan of actual card)

WRL "My QTH" Card (with instructions)

General Electric "From the Log Of" cards
Blue
Orange
Orange - Light Green
Orange - Gray
                         Green

Johnson QSL Cards

Front of Card

Back of Card


                        Collins Radio Employee Cards

1950s Card

1960s Card    


Gonset Employee Card

1960s Card


Russian Tube Amplifier Projects

160-meter pair GI-7bT amplifier:

All Band GS-31b amplifier:



75A-1 cabinet and speaker:

160-meter transverter:




    
    
    

More articles of interest will be added from time to time.


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