Hi John > Hi I was wondering if some one has any manuals for the DFM TNC and the PSK-1 or the the PSK-1+? Sorry for the delay in replying. Many lunar cycles ago I scanned in the PSK1 manual for someone else on the reflector. It's not the best quality, but hopefully it will be of some use. http://www.g6lvb.com/images/psk1.pdf 73, Howard G6LVB