Program Development


MAP65 works together with suitable hardware that converts RF to baseband.  The hardware/software combination implements a wideband, highly optimized receiver for the JT65 protocol, with matching transmitting features using a standard SSB transceiver.  MAP65 can be used in both single-polarization and dual-polarization systems.  If two polarization channels are available, MAP65 determines and matches the linear polarization angle of each decodable signal.  This capability provides a major advantage for efficient EME ("Moonbounce") communication on the 144 and 432 MHz bands.  A single-channel system works extremely well for 23 cm EME, displaying all signals (both CW and JT65) in the sub-band 1296.000 to 1296.090 MHz and decoding the JT65 signals.

MAP65 can accept input signals directly from a soundcard capable of sampling at 96000 samples per second.  Two audio channels (one "stereo" channel) are required for a single polarization system, and four channels for dual polarization.  Optionally, Linrad (by SM5BSZ) or SDR-Radio (by HB9DRV) can be used as convenient and highly effective "front ends" between receiver hardware and MAP65's data input.  Linrad offers extremely effective noise-blanking capabilities, especially when strong signals are present in the receiver passband.  SDR-Radio offers user-friendly control of supported receiver hardware, as well as many useful and attractive displays.  MAP65 also supports the FUNcube Dongle and several all-digital receivers including the SDR-IQ and Perseus.

The latest release, MAP65 v2.7, includes mode QRA64, which is not yet described in the User's Guide.  Version 2.7 also includes support for the IQ+ XT 144 MHz exciter from LinkRF.

The following hardware and software combinations are known to work well with MAP65:

  • WSE with Linrad or direct input from 4-channel soundcard
  • IQ+ with Linrad or direct input from 4-channel soundcard
  • SDR-IQ, other RFspace radios, or Perseus with Linrad or SDR-Radio
  • FUNcube Dongle with Linrad, SDR-Radio, or direct USB input
  • SoftRock or similar with Linrad, SDR-Radio, or direct input from 2-channel soundcard
  • MAP65 User's Guide

    Downloads for Windows

    ©2001-2020 by Joe Taylor, K1JT