Uploaded November 2023 | Updated September 2026, 2 weeks ago
Safety First Using an old cathode keyed transmitter can be dangerous high voltage may be on the metal parts of your telegraph key . Many older Tube transmitters key the final amplifier tube cathode on my old Heathkit AT-1 I measured 300 volts on the metal parts of the Key . I found this out after I got a real nasty shock when touching my old J38 Key connected to the AT-1 . Placing the key in a plastic bag and operating the Key through the plastic bag when using old transmitters adds a measure of safety . Having the key in the bag also protects the key from dust and dirt . If you are showing the station to someone just pull the bag off 73 Bob
Safety First Using an old cathode keyed transmitter can be dangerous high voltage may be on the metal parts of your telegraph key . Many older Tube transmitters key the final amplifier tube cathode on my old Heathkit AT-1 I measured 300 volts on the metal parts of the Key . I found this out after I got a real nasty shock when touching my old J38 Key connected to the AT-1 . Placing the key in a plastic bag and operating the Key through the plastic bag when using old transmitters adds a measure of safety . Having the key in the bag also protects the key from dust and dirt . If you are showing the station to someone just pull the bag off 73 Bob
