General Electric HM-171 and HM-185 Technical Information

Mechanical TV
- Gallery
- Database
- More
- Sets at the Museum
- Restoration
- Broadcasting
- Peter Yanczer's Site
Pre-1945 TV
- Gallery
- Database
- More
- American Sets at the Museum
- British Sets at the Museum
- Restoration
- CRT Rebuilding
- Broadcasting
- Technical Information
- Other Equipment
  - Antennas
  - CRTs
  - Test Equipment
  - VHF Boosters
Postwar TV
- American Postwar TV
  - Database
  - More
  - Sets at the Museum
- British/European Postwar TV
  - More
  - Sets at the Museum
- Restoration
- CRT Rebuilding
- Postwar Broadcasting
- Technical Information
- Other Equipment
  - Accessories
  - Advertising
  - Antennas
  - CRTs
  - Test Equipment
Early Color TV
- Gallery
- Database
- Color TV Systems
- More
- Sets at the Museum
- Restoration
- CRT Rebuilding
- Broadcasting
- Technical Information
- CRTs
- Pete Deksnis's Site
CRT Rebuilding
- Rebuilding Tubes at the Museum
- Donations
The Museum
- Early Television Foundation and Museum
- Directions to the Museum
- Friends of the Museum
- Equipment Donations

Museum Hours:

Saturday 10-6

Sunday 12-5

Early Electronic Television

Television: Three channel (50-90 mHz) superhetrodyne. 5 inch CRT (5BP4) tetrode. Electrostatic focus and deflection, approx. 30 degrees.