[Elecraft] KX3 and JS8CALL

[stephen shearer]

I use KX3 for wsjt-x and JS8Call.  I just connect the KX3 audio 
(headphone jack) to the USB sound card.  I use the waterfall to "hear" 
what is going on and I like the quiet.  I have not noticed hum.  I have 
a few snap on toroids on the audio lines in case.  I use 12" audio 
cables from the KX3 to the sound card and a 3' USB cable to the RPi.  I 
run 80 watts, often...

I use USB Sound card    - 
https://www.amazon.com/Sabrent-External-Adapter-Windows-AU-MMSA/dp/B00IRVQ0F8/ref=sr_1_3?keywords=Sabrent+USB+External+Stereo+Sound+Adapter&qid=1584190492&s=electronics&sr=1-3

not much different..

73, steve WB3LGC

On 8/7/19 2:02 PM, Michael Arnold wrote:

> Michael,
>
> I have good luck using my KX3 with a Raspberry Pi 3B+ and also the new Raspberry Pi 4 for both JS8Call and WSJT-X. I use an inexpensive USB audio adapter/sound card and standard stereo 1/8" (3.5mm) male to male cables connected between the MIC and PHONES jacks on the KX3 and the sound card. To listen to the receive audio and monitor transmit audio, I split the PHONES output using an 1/8-inch "Y cable" and feed one side to the sound card and the other side to a powered speaker. For CAT control and PTT via CAT I use the standard Elecraft USB serial cable from the ACC1 jack to a Raspberry Pi USB port.
>
> In Settings on the Radio tab, under CAT Control, I choose the K3/KX3 or KX3 as the rig and /dev/ttyUSB0 as the serial port. You'll also want to match the radio serial port settings, typically, 38400, 8, 1 and none. On the Audio tab, under Soundcard, I select Default:CARD=device for both Input and Output.
>
> This method may result in some low-level 60 and 120 Hz audible ground loop hum when AC powered, particularly with the powered speaker connected, but the transmit signal, at least in my case, is clean. You can certainly use a SignaLink or equivalent unit for better isolation and level control, but I've found that the little USB audio adapter/sound card works fine and is a really compact solution for portable operation!
>
> Audio Adapter:  https://www.amazon.com/gp/product/B01N905VOY
> Audio Splitter:  https://www.amazon.com/gp/product/B07431YDWM
>
> 73,
>       Mike W8NWA
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of michaelheit--- via Elecraft
> Sent: Tuesday, August 06, 2019 5:10 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] KX3 and JS8CALL
>
> I would like to use JS8CALL on my Raspberry Pi 3B+ , so do I need to use my SignaLink as well?  Has anyone on this group used a Pi3 with JS8CALL connected to their KX3? Getting the KX3 connected to the Pi seems problematic; I have all the connectors from Elecraft, the program is loaded on the Pi and seems to operate properly, but doesn't seem to work with the KX3. I will need to get a GPS HAT for the Pi and I'm considering the PI HAT from North West Radio that includes a built in GPS with antenna. Thank you in advance for any input ...
> de AD7VV
>
> Michael Heit
> North Pole, Alaska
> AD7VV
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