Quantity   Component name
1 × Headset 5 pin DIN plug 180 deg Jaycar PP0304
1 × Headset Electret Microphone element Jaycar AM4011
1 × Headset 40mm speaker Jaycar AS3004
1 × Headset 1nF RF Bypass cap ceramic JAYCAR RC5336
1 × Headset Tactile Switch (PTT) Jaycar SP0609
1 × Headset shielded cable (Twin core) Jaycar WB1502
1 × Switch Box PTT select switch 4PDT Jaycar ST0506
1 × Switch Box 2.2K Resistor Jaycar RR0580
1 × Switch Box 5 pin DIN socket LINE/INLINE versions Jaycar PS0352 / PS0438
1 × Switch Box UHF Cable Icom spare part - cable for HM158LA
1 × Switch Box Air Band Cable Icom spare part - cable for HM-240
1 × Preamp Transistor PN100 or 2N5089 (Preferred) Jaycar ZT2283 or 2N5089 if you can get it
1 × Preamp 220K resistor Jaycar RR0628 (pack of 5)
1 × Preamp 10K resistor Jaycar RR0596 (pack of 8)
1 × Preamp 1K resistor Jaycar RR0572 (packo f 8)
1 × Preamp 1uF capacitor (100nF) Jaycar RG5236
1 × Preamp 100uF or 22uF Tantalum capacitor Jaycar RZ6658
2 × Preamp 1nF RF Bypass Capacitor Jaycar RC5336