[Elecraft] Need local help

[Bill Frantz]

I have used three interfaces for digital. Note that my MacBook 
Pro can't listen and talk over its audio connector at the same time.

The first interface I used was a SignaLink. It was easy to set 
up. It works with the stock drivers on both MacOS and Linux. 
Making cables for it was easy. It has an internal VOX so you can 
key the transmitter without turning the radio's VOX on. (Both 
the K3 and the KX3 have only one VOX setting for both voice 
modes and digital. I use push-to-talk for voice modes so random 
shack noise doesn't trigger the transmitter. Remembering to 
switch it on and off is a PITA since I sometimes change modes 
several times in an evening.)

I have a Tascam US-122 mkII interface. It does the best job. 
With the SignaLink I had to compromise between enough 
sensitivity for weak PSK stations and enough head room for the 
strong ones. I was always riding the RF volume control. The 
Tascam has enough dynamic range. However, it requires a special 
driver, so I can't use it on my Linux box. Works fine with MacOS 
and will be the interface I use for field day this year.

I have a $3-$5 interface that I added to an Amazon order on 
impulse. I have never gotten it to work well with the KX3. I 
think I need to build an attenuator. It works with the stock 
drivers on MacOS and Linux.

On 6/9/15 at 8:47 AM, wunder at wunderwood.org (Walter Underwood) wrote:

>Any old $20 USB audio dongle will probably do just as well as the Tigertronics.

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