Good comments on the M14 keyboard thread. You may also run across gold-plated contacts on M28 keyboards and TDs used for low-level signaling. +/-6v, 80uA. <div dir="auto">You can use these on 60ma loops but you’ll never be able to go back to low-level after the gold has been blasted away….</div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Nick England K4NYW<br><a href="http://www.navy-radio.com" target="_blank">www.navy-radio.com</a><br></div></div></div></div></div></div>