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The Four-20 is a crystal controlled CW transmitter. It uses an 807 in the final stage.
General characteristics
- HAM bands
- 80m 40m 20m 15m 10m
- Frequency stability
- ?
- Tuning steps
- ?
- Memories
- ?
Transmitter
- TX-range
- 80-10 m
- Modulations
- AM CW
- RF-output
- 20 W
Connections
- Antenna
- -
- Impedance
- 50/600 Ω
- Other
- -
Electrical
- Power requirements
- Mains
- Current drain RX
- -
- TX
- ?
Physical
- Dimensions (w×h×d)
- ?
- Weight
- ?
- Form factor
- Base Station
- Manufactured
- Between 19xx and 19xx
Other features
- Usage
- Amateur / Ham radio operators
- Features + options
- -
- Accessories
- -
- RigReference ID
- 2833
- MPN
- HAMMARLUND-FOUR-000020
Manuals, diagrams and brochures
-
No documents available for this particular model.
- Upload relevant documents
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 Hammarlund Four-20. Just bought or sold this model? Let us know what you traded it for and help other ham operators!
These estimates are based on the following prices:
Links & tools
- Search YouTube for Hammarlund Four-20 videos
- Search Google for Hammarlund Four-20 information
- Search Google Images for Hammarlund Four-20
- Search Twitter for Hammarlund Four-20 news
- Search Wikipedia for Hammarlund Four-20 information
- Search the Boat Anchor Manual Archive (BAMA) for Hammarlund Four-20 for manuals and documents (using Google)
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