This is what I would like............ Portable, compact mobile/portable operations capable TNC with APRS, HF or VHF Packet, Robust HF 200/600 baud Packet. OK we already have it, its the SCS DSP Tracker http://www.scs-ptc.com/controller.html
The big features of this are: This DSP modem can simultaneously decode multiple signals in a bandwith of up to plus/minus 400Hz around an adjustable center frequency, e.g. all signals with a 800Hz bandpass will be decoded. When connected in AX25 to two stations at same time, the tnc will even adjust its own transmitted qrgs according to the two partners and their individual offset automatically. As posted elsewhere by Mike, OE3MZC Add the Robust Packet mode and it becomes a serious performer. Now the "dream" bit :-) Since it has a USB only interface (apart from the GPS port) and NO Mailbox on board, its applications have been a bit limited. What I see as a good add on is, an external interface box which has a USB port to connect to the TNC, an RS232 Port to connect either a PC running an older style comms program, or even connect a dumb terminal to it. The "box" to have an onboard mailbox, maildrop, PBBS what ever you want to call it, along the lines of the old PK232/KAM/Paccom units. The "dream" box could be a keyboard to keyboard Robust Packet communicator, or a Robust Packet mailbox. Given the DSP tuning capability of this unit and being able to resolve off frequency signals means its ideally suited to this kind of operation. The performance would be superior to the vagaries of 300 baud HF Packet and the unit would offer portability and low current consumption. Who.....would like to make the "dream" interface box, with features above....;-) 73s Jack VK4JRC
