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New price 1961: $619.50

General characteristics

HAM bands
?
Frequency stability
?
Tuning steps
?

Transmitter

TX-range
80-10 m
Modulations
AM   CW   SSB  
RF-Output
AM: 50 W, SSB/CW: 100 W

Connections

Antenna
-
Impedance
?
Other
-

Electrical

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

Physical

Manufactured
Between 1960 and 1963 in USA
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

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
?
MPN
E.F.-JOHNSON-INVADER

Manuals, diagrams and brochures

No documents available for this particular model.
 
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Reviews & stories

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 friendliness
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 friendliness
Value for money
Aquired
Good condition in 2013
USD 550.00

New and second-hand prices

Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used E.F. Johnson Invader. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

Based on historic data, today's second-hand price of the E.F. Johnson Invader is around:

  • USD 395.00 ~ USD 333.00

These estimates are based on the following prices: (see all 3 prices)

Year Historic price Condition Submitted by
2013 USD 550.00 Used / Good ac0rl
2012 USD 550.00 Used / Good dgalligan60
2012 USD 550.00 Used / Good ac0rl

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