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Swan VX-2 Vintage plug-in VOX Accessory For the 350, 500, & 600 Series Radios, in Excellent Condition

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MPN:
VX-2
Condition:
Used
Shipping:
$8.00 (Fixed Shipping Cost)
  • Swan VX-2 Vintage plug-in VOX Accessory For the 350, 500, & 600 Series Radios, in Excellent Condition
  • Swan VX-2 Vintage plug-in VOX Accessory For the 350, 500, & 600 Series Radios, in Excellent Condition
$69.99
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Description

Swan VX-2 Vintage plug-in VOX Accessory For the 350, 500, & 600 Series Radios, in Excellent Condition

 It is rare to find one of these Vox units let alone in this nice condition.

 
The Swan VX-2 is a vintage plug-in VOX (Voice-Operated Transmit) accessory made by Swan Electronics (Oceanside, CA) around 1968. It adds automatic voice-activated transmit capability to compatible Swan SSB transceivers—no need to manually press the PTT (push-to-talk) button on the microphone. You speak, and it keys the radio.Key Details
  • Function: Audio-amplification-based VOX circuit for hands-free SSB operation. It senses your voice and switches the transceiver from receive to transmit.
  • Design: Small chassis-style plug-in module (not a standalone box). It installs inside the transceiver via a dedicated accessory socket.
  • Power: Draws power directly from the Swan transceiver (no separate supply needed in most cases).
  • Condition notes: Many surviving units are 50+ years old. Some have “modified” versions with updated instructions for better performance. Test VOX gain, delay, and anti-trip settings if possible.
Compatible Swan RadiosThe VX-2 was designed as a plug-in accessory specifically for Swan’s classic tube-type HF SSB transceivers from the 1960s–1970s. It fits models that have the VOX accessory socket (earlier VX-1 was the predecessor; VX-2 is the updated version).Confirmed compatible models (from Swan service manuals, operating instructions, and user listings):
  • Swan 350 / 350A / 350C / 350D
  • Swan 500 / 500C / 500CX
  • Early Swan 600T
  • Other Swan tube transceivers in the same era that accept plug-in VOX units (e.g., many 500-series variants)
It is not compatible with modern solid-state rigs, non-Swan radios, or Swan models without the proper accessory socket. Always verify your specific transceiver has the VOX plug-in port before buying or selling.
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