[Elecraft] QSK? Newbie question

Sat Oct 18 16:17:00 2003

Typically used in CW operation, the QSK Q-signal means "Can you hear me
between you signals and if so can I break in on your transmission?"  Thus,
the connection between QSK and operating "break-in".

Break-in operation comes in two flavors, full and partial (sometimes called
semi).  In full break-in operation the receiver is unmuted between every dot
and dash.  In partial break-in operation the receiver is unmuted between
every character.

If the receiving station wants to "break in" on the transmitting station,
the receiver holds his key down for a second  or two.  The sender hears the
key down and stops transmitting.  Thus, the receiver has "broken in" on the
sender.

With either flavor of break-in, the transmitter, and possibly an amplifier,
is constantly being keyed and unkeyed.  Transmitter relays and other control
relays are energized and de-energized with each keying or unkeying.
Needless to say, it can get quite noisy in the shack!

What the Ameritron QSK-5 provides, is provide quiet electronic switching of
an HF linear amplifier using PIN diodes.  It eliminates the noisy
clickety-click of relays thus returning relative peace and quiet to the ham
shack operating QSK.

73,

Bill...
AIØC

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of coca
Sent: Saturday, October 18, 2003 1:01 PM
To: Elecraft reflector
Subject: [Elecraft] QSK? Newbie question

Hi folks

I've a stupid question to ask. What is the significance of the remarks
about QSK operating in amateur radio? I've been used to a world where
transmitters and receivers are separate beasts and where the
instantaneous muting of multiple receivers and public entertainment
systems is accomplished by driving relays off the back contacts of a
morse key.

cheers

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