The following modem kits have been custom configured for the following HF Radio transceivers using the SCS PTC-IIpro Pactor Modem. The cables used to construct these kits are tested prior to shipping and the support software supplied is downloaded just prior to shipping so that it is completely up to date. The software support CD supplied with all of the modem kits was developed specifically for the cruising mariner with the object of providing a simple method of software reinstallation if a computer crash was experienced while cruising. The CD also includes manuals for most of the popular marine and amateur HF transceivers plus a host of other documentation that would be useful for the cruising mariner.