• Icom IC40, 40GX, 40S, A20 / GME 475S, 6000 / Yaesu (various)
• Icom A3, A4, A22, A6, A24 and GA Air Band
• Uniden UH053, 056, 057 UHF CB
• Uniden UH005 / UH040XR / UH050,52 
• Kenwood (various)
• Vertex(Yeasu) UHF (Single Plug)
• Vertex (Yeasu) Air Band and Icom A23/A5 Air Band

Please contact us here at Raptor Designs  if you wish to purchase a Heaset/PTT Kit suitable for construction of a finger switch PTT.. .  This includes:

• Electret Mike (miniature) *Note: If for air band, requires additional preamp module . See our explanation of the requirements for air band mikes here
• 27mm Mylar speaker
• 3.5mm Mono Plug
• 2.5mm Mono Plug
• 3.5mm Stereo Plug
• 3.5mm Stereo Socket
• 12.5mm square tactile switch pre-fitted on 1.2m lead (for finger switch)
• 2m shielded dual audio cable
• 1nF ceramic Capacitor
• 2.2K resistor
• 22K resistor
• Assorted heatshrink tubing and cable ties
• Resin cored solder.
• General instructional sheets.
• NOTE: DOES NOT INCLUDE MOULDED CONNECTORS OR YEASU/ICOM 4-PIN PLUG. Please call or e-mail for quotes on these items.

Note:  This is also the circuit for the Icom A6/A24, but these two radios may exhibit squealing problems due to a design flaw that feeds back RF into their microphone and power inputs. Icom know about the problem and only warrant operation for a limited number of late model David Clark headsets.