Elecraft

K2 - KRC2 - Yaesu FL7000 Amp

Classic

List

Threaded

3 messages Options

Rajiv Dewan, N2RD

K2 - KRC2 - Yaesu FL7000 Amp

Is any one using a K2 along with a Yaesu FL-7000 amp and auto-
switching the amp thru a KRC2?

Any guesses if this work with K3?

Raj, N2RD

--
Rajiv Dewan, N2RD
[hidden email]
FN13fc

--

_______________________________________________
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

Greg - AB7R

Re: K2 - KRC2 - Yaesu FL7000 Amp

Hi Raj.

This is from the FAQ page:

Do I need the KRC2 option for my future K3 to band switch
my non-Elecraft amp automatically?

At least initially. We may provide other popular control
protocols later.

Is there a relay output from the K3 to switch on an
external amplifier? If so, is it done via the accessory
connector on the rear panel?

Yes; it has its own connector (KEY OUT) on the rear panel.
The KEY OUT line is a MOSFET, open-drain (equivalent to
open collector in a BJT device). It can handle a lot of
current AND a lot of voltage. Exact specs TBD.

73 and Thanks!
Greg
AB7R

On Wed, 9 May 2007 09:20:32 -0400
"Rajiv Dewan, N2RD" <[hidden email]> wrote:

> Is any one using a K2 along with a Yaesu FL-7000 amp and
>auto- switching the amp thru a KRC2?
>
> Any guesses if this work with K3?
>
> Raj, N2RD
>
>
> --
> Rajiv Dewan, N2RD
> [hidden email]
>FN13fc
>
> --
>
> _______________________________________________
> 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

Doug Faunt N6TQS +1-510-655-8604

Re: K2 - KRC2 - Yaesu FL7000 Amp

I don't know what the FL7000 requires, but it can probably be produced
simply from the Accessory connector.

From: "FISCHER,GREG" <[hidden email]>
Date: Wed, 09 May 2007 08:07:12 -0500

Hi Raj.

This is from the FAQ page:

Do I need the KRC2 option for my future K3 to band switch
my non-Elecraft amp automatically?

At least initially. We may provide other popular control
protocols later.

Note pins 3, 9, 13, and 14 on the Accessory connector. This means you
DON'T NEED the KRC2 for many purposes. For instance, I want to have
my IC2KL follow the band switching on my K3. The KRC2 doesn't provide
the necessary voltage level signal without external components but a
simple MUX and resistor network connected to those four pins on the K3
will do that. Many setups actually use BCD encoded band signals, just
like the K3 supplies.

The KRC2 is necessary for the K2, since the only band data is on the
AUXBUS, but it's probably not necessary for the K3 for most uses.

73, doug

>From the FAQ:
>What is the pin-out for the DE-15 Accessory connector?
>1 - DIG0 FSK? software definable TTL digital input (5V MAX!)
>2 - AUXBUS
>3 - BAND 1 Output (TTL)
>4 - PTT input (in parallel with MIC jack PTT )
>5 - COMMON (via 100 uH choke)
>6 - DIG Out 0 (software definable TTL digital output)
>7 - DIG1 Input software definable TTL digital input (5V MAX!)
>8 - POWER (pull to ground with open collector or switch to turn K3 ON)
>9 - BAND 2 Output (TTL)
>10 - KEY input (in parallel with KEY jack on rear apron)
>11 - DIG Out 1 (software definable TTL digital output)
>12 - COMMON (via 100 uH choke)
>13 - BAND 0 Output (TTL)
>14 - BAND 3 Output (TTL)
>15 - ALC input (0 to +5V MAX)