Amplifier Hook Up
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I use my K3/100 with an Acom 1000, I just connect the phono keying
output to the amplifier keying input with a phono to phono screened lead. The Acom doesn't have ALC output, so it's not an issue. The K3/Acom combination works great on CW with no relay thumps or clicks from the almost silent vacuum relay in the Acom linear. The ALC input to the K3 is positive going (0 to + 5 Volts on pin 15 of the Aux I/O socket) and has been discussed on the Reflector previously. 73 Dave, G4AON K3/100 #80 ================ When examining the back panel of the K3 I see an output for PTT to control an amplifier but I don't see any input for the amplifier AGC output to control the transmitter power. Surely this common feature was not overlooked on such a feature rich transceiver. Where is the connection for this control and what control voltage is it looking for? I don't see an amplifier hook up diagram in the manual either. Surely someone using this transceiver with an amp! _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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That PTT RCA socket is an INPUT - to close the PTT line - ie it puts the K3
into transmit. On 26/12/07 19:16, "Dave G4AON" <[hidden email]> sent: > I use my K3/100 with an Acom 1000, I just connect the phono keying > output to the amplifier keying input with a phono to phono screened > lead. The Acom doesn't have ALC output, so it's not an issue. The > K3/Acom combination works great on CW with no relay thumps or clicks > from the almost silent vacuum relay in the Acom linear. > > The ALC input to the K3 is positive going (0 to + 5 Volts on pin 15 of > the Aux I/O socket) and has been discussed on the Reflector previously. > > 73 Dave, G4AON > K3/100 #80 > ================ > > When examining the back panel of the K3 I see an output for PTT to control an > amplifier but I don't see any input for the amplifier AGC output to control > the transmitter power. Surely this common feature was not overlooked on > such a feature rich transceiver. Where is the connection for this control > and what control voltage is it looking for? I don't see an amplifier hook > up diagram in the manual either. Surely someone using this transceiver with > an amp! Man is the best computer we can put aboard a spacecraft and the only one that can be mass produced with unskilled labour. -Wernher von Braun, rocket engineer (1912-1977) _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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K3 #157 (factory-assembled) ordered on May 2 arrived on Xmas eve.
Here's my question. How do you connect an ICOM PW-1 amplifier to the K3. I know that the ALC is a yet to be resolved issue. I have an IC756ProIII already connected to the amp so the K3 will be the second exciter. Has anyone connected a PW-1 to a K3 yet? I have to run a cable from the send2 connection on the PW-1 but what does it connect to on the K3. There are no amplifier connection diagrams in the K3 manual (yet, anyway!!) Incidentally, in a side-by-side comparison, the K3 receiver wins hands-down - no contest. I really want to try the K3 with the PW-1 in the Stew Perry Challenge this weekend. John K8WDN K3 #157 K2 #85 -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of David Ferrington, M0XDF Sent: Thursday, December 27, 2007 4:47 AM To: [hidden email] Subject: Re: [Elecraft] Amplifier Hook Up That PTT RCA socket is an INPUT - to close the PTT line - ie it puts the K3 into transmit. On 26/12/07 19:16, "Dave G4AON" <[hidden email]> sent: > I use my K3/100 with an Acom 1000, I just connect the phono keying > output to the amplifier keying input with a phono to phono screened > lead. The Acom doesn't have ALC output, so it's not an issue. The > K3/Acom combination works great on CW with no relay thumps or clicks > from the almost silent vacuum relay in the Acom linear. > > The ALC input to the K3 is positive going (0 to + 5 Volts on pin 15 of > the Aux I/O socket) and has been discussed on the Reflector previously. > > 73 Dave, G4AON > K3/100 #80 > ================ > > When examining the back panel of the K3 I see an output for PTT to control > amplifier but I don't see any input for the amplifier AGC output to control > the transmitter power. Surely this common feature was not overlooked on > such a feature rich transceiver. Where is the connection for this control > and what control voltage is it looking for? I don't see an amplifier hook > up diagram in the manual either. Surely someone using this transceiver with > an amp! -- Man is the best computer we can put aboard a spacecraft and the only one that can be mass produced with unskilled labour. -Wernher von Braun, rocket engineer (1912-1977) _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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