Re: [Elecraft] SP3 vs SP4

2023-03-08 Thread Geert Jan de Groot

On 08/03/2023 04:39, elecraft-requ...@mailman.qth.net wrote:

Got the SP4 for my K4D today.  So I can put the SP3 in the closet for the
rest of my life (next to other elecraft radios and accessories) or put it
out for sale since Elecraft no longer makes them.


What is the difference between a SP3 and a SP4? Looking at the pictures 
they seem similar apart from the text on the bezel.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 


Re: [Elecraft] KRC2 Band Decoder question

2023-03-08 Thread Victor Rosenthal 4X6GP

I have one which I've successfully used with my K3.
I did find that in a QRO environment, you should be careful with RF 
coming in on the outputs. I had to hang some ferrites on them to prevent 
erratic operation.


73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/

On 08/03/2023 9:28, Jim Brown wrote:

On 3/7/2023 7:38 PM, AB2E Darrell wrote:

Are there any issues using this with a K3?


Not that I know of, Darrell, although there are a bunch of options 
covered in the manual. Should be on the website. W6GJB and I have been 
using a pair of KRC2s that N6RNO built to switch filter sets in his 
two-op contesting trailer. I'm usrf the single-coax feed from the AUX 
connector to the KRC2. Simplifies things a lot.


The KRC2 is a rather early product, and shielding is non-existent, 
thanks to paint everywhere between stuff that should be bonding (like 
the connectors, and joints between parts of the chassis. A metal chassis 
provides no shielding if cable shields are not bonded to the chassis at 
the point of entry, and if shielding is not continuous. I took them 
apart and used a LOT of sandpaper. :)


73, Jim K9YC




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to k2vco@gmail.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 


Re: [Elecraft] KRC2 Band Decoder question

2023-03-08 Thread Geert Jan de Groot

On 08/03/2023 04:39, elecraft-requ...@mailman.qth.net wrote:

I picked up a KRC2 Band Decoder.
Are there any issues using this with a K3?
Does the stock DB9 cable to the rig need to be rewired for the K3?
I want to hook it up for FD with a bandpass filter set.


There are a number of ways to set up a KRC2, depending on how you want 
to interface it. With an Elecraft radio, you probably want to use the 
AUX bus.


On the K2, for which the KRC2 was originally designed, the AUX signal is 
on the DE9 serial connector (and it's one of the reasons you cannot use 
a "straight cable" connecting a K2 to a serial device!!!).


On the K3, the AUX signal is on the DE-15 ACC connector, NOT on the 
9-pin serial port. The KRC2 documentation got updated for this, be sure 
you have the errate document describing connection to the K3:

https://ftp.elecraft.com/KRC2/Manuals%20Downloads/KRC2_Manual_Errata_Rev_C4.pdf
So make sure you get the errata document.

73, Geert Jan PE1HZG
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com