And Yet Another "Home-Brewed" item. 3 Wire Shielded cable.
Been there done that. You realize you only ground one end? At the computer end. "Faraday shield." You can also use other cables that are not shielded, with extra pairs, and ground the unused pairs at one end. May not be quite as effective, but often works.
First time I did that, was working out of town installing 911 gear. Motorola had made a change in the remote radio control console. The under desk headset connector was not shielded, they are balanced pairs. But it was picking up hash from the very large, very powerful CRTs used back then for the CAD (Computer Aided Dispatch) and the other for the ANI/ ALI for 911 (Auto Number, Auto Location Information). So I did the same thing grounded one end to the rear of the console interface, and just like that, gone. The boss was impressed when I told him about it.
I am 77. First licensed in 65, Jr in high school, got my general after graduating.
This was our ham club at Treasure Island, Navy electronics tech "A" school. I recently heard we have just lost another two of us.
There are three websites about the old club
K6NCG - Treasure Island Radio Amateur Club 1969-1970
K6NCG Amateur Radio Station - Treasure Island, CA
K6NCG
Me, 1968, 20 years old, working at the top of the 120ft tower
Been there done that. You realize you only ground one end? At the computer end. "Faraday shield." You can also use other cables that are not shielded, with extra pairs, and ground the unused pairs at one end. May not be quite as effective, but often works.
First time I did that, was working out of town installing 911 gear. Motorola had made a change in the remote radio control console. The under desk headset connector was not shielded, they are balanced pairs. But it was picking up hash from the very large, very powerful CRTs used back then for the CAD (Computer Aided Dispatch) and the other for the ANI/ ALI for 911 (Auto Number, Auto Location Information). So I did the same thing grounded one end to the rear of the console interface, and just like that, gone. The boss was impressed when I told him about it.
I am 77. First licensed in 65, Jr in high school, got my general after graduating.
This was our ham club at Treasure Island, Navy electronics tech "A" school. I recently heard we have just lost another two of us.
There are three websites about the old club
K6NCG - Treasure Island Radio Amateur Club 1969-1970
K6NCG Amateur Radio Station - Treasure Island, CA
K6NCG
Me, 1968, 20 years old, working at the top of the 120ft tower