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To: mylife
I used to work on the R390 back in the day in the navy. That thing is a boat anchor! tubes and mechanically tuned slugs but the most sensitive receiver ever built. I could tweak on to have a minimum discernable signal at -127dbm This little Kaito is pretty neat. Selectivity isn't stellar but it fits in your pocket.

My Canadian friend calls them boat anchors, too-- I learned the "Bell Telphone Lineman's Trick" for setting gear like that in a relay rack- lay the danged rack down on its back, and drop the stuff straight down. Also used threaded rods ( studs ) with nuts instead of machine screws, so I didn't have to struggle to align the cuts in the front panels with screws and holes.

I tried to locate a link to that gear EdS on Free Dominion was talking about, but their "your posts" format is paged, and it was about two years ago- so I quit on page 38.

It was some sort of handheld transceiver that covered an amazing range of frequencies, voice, RTTY, SSB.

Just astounding how much technology was packed in to something smaller than an old bag telephone.

15 posted on 03/30/2008 1:30:34 PM PDT by backhoe (-30-)
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To: backhoe

There was a fellow here a while back who “inherited” an r390 and was looking on advice to get it up and running. I came up empty. I havent seen one in 25 yrs.

These new receivers really are neat. pop a video decoder in the PC and you can pick up video transmissions as well.


17 posted on 03/30/2008 1:44:05 PM PDT by mylife (The Roar Of The Masses Could Be Farts)
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