# Is it possible to interface rev. 1.5 with the Elecraft KX3?

**URL:** https://forum.digirig.net/t/is-it-possible-to-interface-rev-1-5-with-the-elecraft-kx3/3480
**Category:** Uncategorized
**Tags:** hardware, elecraft-kx3, elecraft-kx2
**Created:** [April 13, 2024, 4:41am UTC](https://forum.digirig.net/t/is-it-possible-to-interface-rev-1-5-with-the-elecraft-kx3/3480 "2024-04-13T04:41:56Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![AE0PD](https://forum.digirig.net/user_avatar/forum.digirig.net/ae0pd/32/2813_2.png) [@AE0PD](https://forum.digirig.net/u/AE0PD)
#### Post date: [April 13, 2024, 4:41am UTC](https://forum.digirig.net/t/is-it-possible-to-interface-rev-1-5-with-the-elecraft-kx3/3480/1 "2024-04-13T04:41:56Z")

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Looking at the store, the Elecraft cables are only compatible with revision 1.6 and later. I recently purchased a used one on eBay without knowing it was a revision 1.5.

What differences make the Elecraft KX incompatible? Are there any workarounds?

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### Author: ![K0TX](https://forum.digirig.net/user_avatar/forum.digirig.net/k0tx/32/3_2.png) [@K0TX](https://forum.digirig.net/u/K0TX)
#### Post date: [April 13, 2024, 9:01pm UTC](https://forum.digirig.net/t/is-it-possible-to-interface-rev-1-5-with-the-elecraft-kx3/3480/2 "2024-04-13T21:01:28Z")

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Espen,  
With Digirig Mobile rev 1.5 you can interface Elecraft KX for audio and PTT, but not serial CAT control. The [older version](https://digirig.net/digirig-mobile-rev-1-5/) didn’t have RS-232 serial lines voltage converter chip. This connection will require custom cables. Let me know if you want to pursue that.