E.F. Johnson Invader HF Transmitter | 100 W

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New price 1961: $619.50

Frequency range

RX-range
-
TX-range
80-10 m
HAM bands
-
Stability
-
Tuning steps
-
Filters
-

Find the E.F. Johnson Invader on ebay

Receiver

Modulations
-
Sensitivity
-
Selectivity
-
Receiver system
-
IF-frequencies
-
Image rejection
-
Audio output
-

Transmitter

Modulations
AM   CW   SSB  
RF-Output
AM: 50 W, SSB/CW: 100 W

Connections

Antenna
-
Impedance
-

Electrical

Power requirements
Mains (internal PSU)
Current drain RX
-
TX
-

Physical

Dimensions (w×h×d)
292 × 530 × 445 mm (11.50 × 20.87 × 17.52 in)
Weight
25.00 kg (55.2 lbs)
Form factor
Base Station
Manufactured
Between 1960 and 1963 in USA

Other features

Memories
-
Usage
Amateur / Ham radio operators
Features + options
VFO
Internal power supply
Final Tube(s): 2ea. 6146 parallel
SSB Method: Crystal Filter (9 MHz)
Accessories
-

Manuals, diagrams and brochures

No documents available for this rig

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Reviews

Classic Boat Anchor

E.F. Johnson Invader, HF Transmitter | 100 W

Often overlooked, in favor of the older AM/CW transmitters, this is one of the last classic Boat Anchors, and in my opinion, one of the best. It, and it's big brother, the 2K, are the last of the BIG, Johnson Boat Anchors, and are all too often overlooked, by boat anchor collectors. Personally, I prefer the transmitters that also give you SSB, built-in, like this one, the KWS-1, and the Heath Marauder. It just makes them more versatile. While they might not be optimal radios for working SSB, they get the job done, and do it well. Beside, the receiver is the more important part of the set up.

Overall
 
Performance
Build quality
Features
User friendlyness
Value for money
Aquired
Good condition in 2012
USD 550.00

Awesome Transmitter

E.F. Johnson Invader, HF Transmitter | 100 W

After repair and alignment of my invader, it has turned out to be very stable and earns many compliments when on the air. Audio quality and power output is fantastic. Very well built and designed to last.

Written by ac0rl on Dec 6, 2013

Overall
 
Performance
Build quality
Features
User friendlyness
Value for money
Aquired
Good condition in 2013
USD 550.00

Prices

Estimating the value of a rig can be challenging. The graph below shows historical prices paid by hams over the years. May it guide you to good fortune...

Price Condition Year User
USD 550.00 Good / Used 2012 dgalligan60
USD 550.00 Good / Used 2012 ac0rl
USD 550.00 Good / Used 2013 ac0rl
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