Hi Jonathan
Most low-end GA radios require you to select either 8.33 or 25Khz mode in the
setup
and will only display the associated channels or frequencies for that bandwidth.
If you have a radio that allows you to select both channels and frequencies
directly
using the frequency select knob, then it may well adjust the bandwidth
automatically.
Whichever mode you are in, selecting a frequency of 134.1 in 25 Khz mode or
channel
134.105 in 8.33 mode will use the same carrier frequency of 134.1 Mhz for
transmit and receive.
However due to the differing bandwidths, a 25 Khz station should be able to
receive
your transmission ok but an 8.33 station (your aircraft) may not receive
a 25 Khz transmission as clearly.
This can be due to a number of factors concerning radio wave propagation,
transmission,
etc. and is a known issue. See the 2nd to last paragraph of this article
issued by Eurocontrol:
https://833radio.com/news/show/7
There are lots of similar articles on the web.
Unless you wish to change radio, your current method is probably the best way to
achieve satisfactory comms with regularly used 25 Khz stations.
--------
Regards
Kelv Weston
Kit 497
kelv@kdweston.biz
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=490549#490549
|