keying a pdx 400

[midnight special]

just wondering is it possible to key up a pdx 400 with the key jack on the back side? it would be convient for me to key with a hand or foot switch like some heathkits and such,,,,has any one ever done this? just wondering,,,,, thanks 73 midnight special central fl

 

[midnight special]

never mind after doing some testing apparently the rca jack that is marked key is unhooked and not working,,,,,,or maybe was unhooked for the keying circuit to work,,

 

[nomadradio]

It was for a morse-code key. That amplifier was sold with the fiction that it was a ham-only CW transmitter.

When it was delivered to the customer, a set of instructions would show up in the mail soon after. Showed how to hook up the keying circuit and turn it back into a non-legal 11-meter linear. A socket for a large ham-type crystal on the front panel would get removed and replaced by the "SSB" switch.

The FCC closed this loophole fairly fast, and shut down D&A forever around 1980.

73

 

[midnight special]

nomad,,, when i had this pdx repaired a while back the guy said i could put a foot switch or hand switch in the key rca jack but i never seen it done nore found any thing on the net,,,so i put a switxh in and it did nothing,,, i was just try to make it easier for me to use,,,,this my second pdx 400,,, i have had it about 20 years and the first one i had in 1979,,,,thanks for the info,, i wished mine could do ssb but neither of the ones i had or have did it,, both still had the crystal socket,,,,there is so little on the net and wished i did have few more information about it,,,,