[Dxspider-support] feature request

Henk hdv hdv1 at kpnplanet.nl
Wed May 14 20:11:57 BST 2008


The dx-cluster is used for spots on HF as well as for VHF and higher.
At the higer frequencies the mode of propagation is of importance to the 

On those frequencies some are just looking for tropo DX, while others are 
active on EME, etc. .
On top of that various programs exist which use a special notation in the 
remark-area of a dx message to take the spot into account for calculation of 
the propagation. Based on that for instance sporadic-E forecasts for 6m and 
2m are made.

However there is no standardisation in this area. So a lot of valuable dx 
spots are not used by these programs.
Also with a "sh/dx on 2m" all kinds of propagation are shown, while one 
could only be interested in all meteor scatter spots during a ms-shower.

A standardised way of providing the mode of propagation would solve all of 

So the question is : could the mode of propagation be added to a dx-spot.

This could be done as:
dx/ms 144365 sm1abc  the /ms indicating meteor scatter.

The following additions could be made :
/tr tropo
/ms meteor scatter
/au aurora
/em eme
/rs rain scatter
/io iono
/te tep

the /xx should be optional, so all would be the same if no propagation is 

In the show command the mode of propagation could be added, so "sh/dx/eme on 
2m" would only list the eme spots.

Also propagation calculation programs, like G7RAUs Life MUF, could benefit 
substantually from this addition.

Although I am no serious hf operator maybe additions for hf could have value 
as well,
/lp long path
/gl gray line

Please let me know what you (and others) think of this idea.

best regards
Henk PA0C

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