Does anyone know where I might find a speaker-mike (like the one sold by Racal for the PRC-139 series) which I can use with my PRC-68, 128s, etc. I would convert a commercial or amateur radio one, but the speaker impedance is wrong (normally 8 ohm versus the 1000 ohm needed. 73 Joseph Pinner + 818 Hill Street Kingston, TN 37763 KC5IJD / NN0PPHR