WINMOR
WINMOR ( English. WinLink mail over radio , WinLink mail over radio ' ) describes a digital operating mode in the amateur radio service .
purpose
It was developed for use with WinLink on shortwave and enables the transmission of data, e.g. B. E-mails over shortwave in amateur radio. WINMOR offers an alternative to PACTOR transmission in the shortwave range of the WinLink system. The protocol was presented at the ARRL / TAPR Digital Communications Conference (DCC) in 2008 . In 2015, the future successor ARDOP was presented there.
Unlike PACTOR winmor works without expensive hardware TNC , it rich the sound card of a computer and an SSB - transceiver for modulating and demodulating. However, with WINMOR at a bandwidth of 1600 Hz, only a data transfer rate of up to 1300 bit / s can be achieved; PACTOR-IV, on the other hand, can achieve a data transmission rate of up to 5,512 bit / s with a bandwidth of 2400 Hz without compression . In comparison, ISDN has a data transfer rate of 64,000 bit / s (64 kbit / s).
WINMOR can work with 500 or 1600 Hz bandwidth . It is fully disclosed and can be used with no license fees. A platform-independent and open source implementation of the WINMOR protocol with the designation openMOR is under development under LGPL license .
modulation
With WINMOR modulation, different variants are used , from fourfold frequency shift keying through simple quadrature phase shift keying to sixteen times quadrature amplitude modulation .
| Modulation method |
Bandwidth (Hz) |
Carriers |
Max. Gross data throughput (B / min) |
|---|---|---|---|
| 4 FSK | 200 Hz | 1 | 250 |
| QPSK | 200 Hz | 1 | 480 |
| 16 QAM | 200 Hz | 1 | 680 |
| 4FSK | 500 Hz | 3 | 700 |
| QPSK | 500 Hz | 3 | 1300 |
| 16QAM | 500 Hz | 3 | 2300 |
| 4FSK | 2000 Hz | 15th | 2500 |
| QPSK | 2000 Hz | 15th | 5500 |
| 16QAM | 2000 Hz | 15th | 10,000 |
Host software
| program | operating system | License |
|---|---|---|
| BPQ32 / LinBPQ | Windows 95 and higher, Linux | Freeware |
| AirMail (with BPQ32) | Windows 95 and higher | Freeware |
| WinLink Express | Windows XP and higher, Linux (with Wine ) | Freeware |
| Patient | Windows, Linux, Mac OS X | Freeware |
Web links
Individual evidence
- ↑ ARDOP News. In: winlink.org. Retrieved February 2, 2017 .
- ↑ OpenMOR - WinLINK / WINMOR cross-platform implementation. Sourceforge.net; Retrieved May 31, 2012.
- ↑ WINLINK 2000 - E-Mail and position reports via shortwave . (PDF; 274 kB) Retrieved October 11, 2012.