Well, I didn't get as much response to my 

trivia questions, but for those interested, 

here were the answers: 

..............................................................................

Collins Radio Company products were the envy of
just about every ham in the 1950s and 60s. What
single feature differentiated post war Collins equipment from it’s competitors?

THE STABLE PERMEABILITY TUNED OSCILLATOR

The 1625 was the12 volt equivalent of what popular
transmitting tube?

807

The Heath Company made a lot of amateur radio equipment
in the 1950s thru the 70s. What was their first amateur radio
product and how much did it sell for?

the AT-1 @ $29.95

What was the last company that offered a high quality
bandswitched CW/SSB transceiver in kit form? (you had to
wind your own coils and solder all components).

ELECRAFT (the K2, and was still available thru 

last year)

At the beginning of WW2, a company supplied a “mobile
rig” to the US government. The transmitter weighed about
400 pounds. It was mounted in the back of a GMC panel
truck which pulled a gasoline generator mounted on a trailer
for power. What was the name of this company?

HALLICRAFTERS (the BC-610, the military 

version of the HT-4

What company is credited with the invention of the transistor?

BELL LABS

Icom is a very well known manufacturer of radio equipment for
amateur, marine, aircraft and land mobile. When was it founded?

1946

Who made the first commercially available electronic keyer and
how many transistors did it have?

Mon-key in 1948 (no transistprs, 6 tubes)

Who made the first domestically produced software defined ham rig (SDR) and what was it called?

TEN TEC PEGASUS

Who manufactured the first widely accepted antenna analyzer for amateur radio service?

MFJ

How many diodes does it take to make a half wave voltage doubler?

TWO

In 1939, WLW Cincinnati received special authorization to go to
500,000 watts. The special tubes used in the final were water cooled
and there was a pond in front of the building which was used as a
radiator to dissipate the tremendous amount of heat generated by
the tubes. What else was the heat used for?

HEAT THE BUILDING

EXTRA CREDIT

4U1ITU, 4U1WB, 4U1UN, W1AW and K2DM, as a group, count
for how many DXCC credits?

THREE. Both 4U1ITU (HQ for the International Telecommunications Union) in Geneva Switzerland 

and 4U1UN (UN Headquarters) located in NYC are
considered separate countries but 4U1WB (World
Bank), also located in NYC, does not have unique
DXCC status and considered within the USA along
with W1AW and K2DM.