KX3 keying connection to amp question?

[Jr]

 Greetings, can anyone suggest how to connect a KX3 to a non-Elecraft amp
keying circuit? I'm thinking I should use a small reed relay to do the
keying. The amp uses the typical grounding a pin on the amp to key up
amplifier.

Many thanks, 73

k6sdw~ Ed
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[John Oppenheimer]

Hi Ed,

The KX3 specification rates the key line at: "Accessory I/O (ACC2 Jack)
KEYLINE: 30 V, 100 mA max, open drain;" on page 54.

The amplifier should also have a specification. As long as the amp is
under 30V and 100 ma, all will be OK with a direct connection. If the
amp does not have a specification, amp key input measurements can be
performed with a voltmeter and an amp-meter.

John KN5L

On 03/12/2018 10:30 AM, Eddy Avila wrote:
> Greetings, can anyone suggest how to connect a KX3 to a non-Elecraft amp
> keying circuit? I'm thinking I should use a small reed relay to do the
> keying. The amp uses the typical grounding a pin on the amp to key up
> amplifier.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]