Hello, I could use some assistance with a schematic for a dual push-to-talk headset adapter. This is for the BTech GMRS V2 which has dual Tx/Rx capability with integrated dual PTT and uses the commonly found Kenwood 2-pin accessories connector (but could easily be adapted for other radios).
BTech and others make compatible daul PTT mic/speaker accessories, but they cannot adapt to any headset. There are also compatible PTT headset adapters, but they lack dual PTT. Thus, I hope to build my own headset adapter with dual PTT capability.
The Miklor website posted a schematic for dual PTT provided by N3PLA (see A in attachment). However, it is upside down relative to the way it would mount to a radio and the connector referenced from the BTech manual (see B in attachment). It is also a little confusing (at least to me) as it has an optional "serial jack". Thus, I have attempted to adapt it (see C in attachment).
Also attached is my plan to implement the headset adapter, depicted in a more visual "schematic". The color of the wires may be odd but that is simply because I used the colors used in my BTech QHM22D mic/speaker - which I plan to repurpose to make into the headset adapter.
Is my schematic a correct adaption of the dual PTT schematic on the Miklor website? Are there any suggestions to improve the circuit? Note that a 1:1 audio transformer has been added as I will be connecting other audio gear between the radio and the headphones. Also note that the audio signal is converted from mono to dual mono so audio will be heard on both sides of the headphones.
Before ordering parts, I would be grateful if someone with electrical knowledge can verify the planned circuit. It seems to be a simple project, but as an electrical newbie, I don't know what I don't know.
BTech and others make compatible daul PTT mic/speaker accessories, but they cannot adapt to any headset. There are also compatible PTT headset adapters, but they lack dual PTT. Thus, I hope to build my own headset adapter with dual PTT capability.
The Miklor website posted a schematic for dual PTT provided by N3PLA (see A in attachment). However, it is upside down relative to the way it would mount to a radio and the connector referenced from the BTech manual (see B in attachment). It is also a little confusing (at least to me) as it has an optional "serial jack". Thus, I have attempted to adapt it (see C in attachment).
Also attached is my plan to implement the headset adapter, depicted in a more visual "schematic". The color of the wires may be odd but that is simply because I used the colors used in my BTech QHM22D mic/speaker - which I plan to repurpose to make into the headset adapter.
Is my schematic a correct adaption of the dual PTT schematic on the Miklor website? Are there any suggestions to improve the circuit? Note that a 1:1 audio transformer has been added as I will be connecting other audio gear between the radio and the headphones. Also note that the audio signal is converted from mono to dual mono so audio will be heard on both sides of the headphones.
Before ordering parts, I would be grateful if someone with electrical knowledge can verify the planned circuit. It seems to be a simple project, but as an electrical newbie, I don't know what I don't know.
