![rtty contesting rtty contesting](https://i0.wp.com/www.dxzone.com/qtc/wp-content/uploads/2020/09/CQ_WW_RTTY_2020.jpg)
- RTTY CONTESTING HOW TO
- RTTY CONTESTING SERIAL
- RTTY CONTESTING DRIVER
- RTTY CONTESTING SOFTWARE
- RTTY CONTESTING PC
It's nearly free, wheighs nothing, easy to repair.ĭownside: All soundcard software requires Windows and a somewhat more powerful PC. This applies only to AFSK ops, FSK is easier here.įrom the above it seems that soundcard solutions wins hands down, at least from Some programs supply a method to key the rig via a control command to the rig (serial cable required then).īoth solutions require very careful adjustment of AF levels, otherwise severe overmodulation and bad HF transmission can occur. Depending on which input you use on the rig, VOX operation may be possible.
RTTY CONTESTING SERIAL
PTT requires a minimal interface with one or two transistors, fits in the serial cable jack. This applies to AFSK ops, FSK is easier here. Does support FSK vs AFSK in most casesīoth solutions require very careful adjustment of AF levels, otherwise severe overmodulation and bad HF transmission can occur. Consider asking the author for a donation for your DX-pedition.Īround 500 grams (excluding cables), size approx.: x by x by x centimeters Some programs are for free, others, which are more suitable for a contest or DX-pedition, do cost serious money. If you decide to play with the filter configurations, a degree in Signal Analysis is helpful.
RTTY CONTESTING DRIVER
Take handbook with you.ĭepends on the software (RTTY program) which makes use of the soundcard driver (MMTTY or other). Take OS CD ROMs with you, just in case.ĭepends on the software (RTTY program) which makes use of the TNC. If the soundcard itself or the operating system integration fails - forget it. Take two or more TNCs of same model with you. (TBD: how does other sc software compare?) This may apply to 5% or less of all contacts. Some information hints that MMTTY (and probably other soundcard software) decodes RTTY better than many expensive TNCs, under certain conditions. AF Filters no configurableĪF filters are configurable, but a sound understanding of signal analysis is helpful. Up to date DSP TNCs decode RTTY very well.
![rtty contesting rtty contesting](https://www.ukeicc.com/images/Rtty_mmtty.jpg)
Adjust the souncard buffer size, lower values (512) can help. Special hint on MMTY: If you experience lockups, try adjusting the "Priority" setting in MMTTY.
RTTY CONTESTING PC
Make sure that resource consuming processes are stopped (virus scanners, scheduler, power management etc.) Fine tuning the performance of soundcard solutions often requires a somewhat deeper knowledge of the PC and OS.
![rtty contesting rtty contesting](https://qrznow.com/wp-content/uploads/2016/08/Don-Hill-AA5AU-SO2R-Remote-RTTY.jpg)
Make sure that all system sound events are turned off. Recommended speed of PC is something around 300 MHz and above, 32 MB RAM or more. If you have only pure DOS machines with you, TNCs are the only practical solution, there is no support for soundcard solutions under DOS.Ĭan make intense use of resources on the PC under Windows(tm).
![rtty contesting rtty contesting](https://reader023.staticloud.net/reader023/reader/2020102414/5f9293b3273ff734033d7681/html/bg1.png)
No to very little requirements on the PC side, just a serial cable port. Most likely in each notebook you have with you anyway Only if you take more than one (preferrably of the same model) Yes, but you could probably draw power from the rig with just one Yes, maybe helpful in other situations (e.g. TNC vs Soundcard (SC) comparision table, in no particular order Probably the best advice is: Take the equipment your are most familiar with! You have to handle it in stressful, uncomfortable situations and should know it very well. or use the soundcard of the notebook you have with you anyway. The question on hand is whether to use an external TNC or TU (Terminal Unit) a la KAM, PTC (TBD: other brands?) etc.
RTTY CONTESTING HOW TO
Watching some DXpeditions early in 2002 working RTTY, and participating in the following discussions on the RTTY email reflector on the idea was born to write up what experienced RTTY ops think on how to do RTTY during a dxpedition. DX-Stations Guide to RTTY Operations What is this?