Re: [Elecraft] KX2, spy radio

2017-09-01 Thread Phil Kane
On 9/1/2017 7:01 AM, Jim Sheldon wrote: > Naw, he just figured out a practical way to use it in smaller radios by > the invention of the narrow bandwidth, very steep skirted "mechanical" > filter to lop off the unwanted sideband (if you consider the radios of > that day smaller - LOL).  The real

Re: [Elecraft] KX2, spy radio

2017-09-01 Thread Jim Sheldon
erols.com> To: Elecraft@mailman.qth.net Sent: 9/1/2017 8:09:55 AM Subject: Re: [Elecraft] KX2, spy radio And here I thought Art Collins invented SSB, like algore invented the internet (wink-wink) Chas (For all who take life too seriously this WAS intended to be humorous) -Original Messag

Re: [Elecraft] KX2, spy radio

2017-09-01 Thread Charlie T, K3ICH
Sublette Sent: Friday, September 01, 2017 8:46 AM To: Elecraft Reflector <Elecraft@mailman.qth.net> Subject: Re: [Elecraft] KX2, spy radio As a former CT — I enjoyed the web page. Thanks for sharing. Dave, K4TO > On Sep 1, 2017, at 1:09 AM, Mike Morrow <k...@earthlink.net> wrote:

Re: [Elecraft] KX2, spy radio

2017-09-01 Thread Dave Sublette
As a former CT — I enjoyed the web page. Thanks for sharing. Dave, K4TO > On Sep 1, 2017, at 1:09 AM, Mike Morrow wrote: > > Chas wrote: > >> SSB would have been the equivalent of encryption. > > Not even remotely so...SSB technology goes back decades before WWII. > >

Re: [Elecraft] KX2, spy radio

2017-08-31 Thread Mike Morrow
Chas wrote: > SSB would have been the equivalent of encryption. Not even remotely so...SSB technology goes back decades before WWII. From Wikipedia: "The first U.S. patent for SSB modulation was applied for on December 1, 1915 by John Renshaw Carson. The U.S. Navy experimented with SSB over

Re: [Elecraft] KX2, spy radio

2017-08-31 Thread Mike Morrow
Here's a 1970-era small western world 'clandestine' set called the AVCO TAR-224A: http://www.cryptomuseum.com/spy/tar224/ It's about three times the bulk of the KX3, which is very small for the era and not too large even by today's standards. It puts out 20 watts A1 or A3 from 2 to 24 MHz,

Re: [Elecraft] KX2, spy radio

2017-08-31 Thread Dave Cole
That and counting change back... 73s and thanks, Dave NK7Z http://www.nk7z.net On 08/31/2017 07:56 PM, Charlie T, K3ICH wrote: SSB would have been the equivalent of encryption. Much like cursive writing today is secret code for us "old" people. Chas -Original Message- From:

Re: [Elecraft] KX2, spy radio

2017-08-31 Thread Charlie T, K3ICH
SSB would have been the equivalent of encryption. Much like cursive writing today is secret code for us "old" people. Chas -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Stephen Peterson Sent: Thursday, August 31, 2017