[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: Net control

G0MRF wrote:

Nets on HF are fine, particularly if the DX station is unable to manage 
a  pile up.

W9AE replies:

I'm surprised that nobody has mentioned that directed list HF operations 
make contacts at a FAR SLOWER rate than the typical DX or contest 
operation.  Good DX and contest stations make 200+ contacts per hour. 
Directed list operations only make about 60 contacts per hour.

On an FM satellite we could never match the rate of a DXpedition that 
has the luxury to spread out the calling stations over a range of 
frequencies.  But I hear about 50 successful 2-way contacts on a "good" 
FM satellite pass (maybe Bob's east coast passes are worse than the ones 
I hear).  A directed net would never make that many contacts in one 
pass.  A directed net would allow some inexperienced or low-power 
operators to make a few contacts, but at a cost of reducing the total 
number of contacts made.

The number of successful 2-way contacts on the FM satellites would 
increase dramatically if two rules were rigidly followed:
1. Don't transmit if you can't hear the satellite well.
2. Most importantly, don't transmit if another QSO is in progress.  That 
is, DON'T TRANSMIT after hearing "W1ABC this is W6XYZ" (unless you are 
W1ABC).  Only transmit after W1ABC responds to complete the 2-way 
contact.  It doesn't take a genius to recognize the difference between a 
"call" and a "response".  Only transmit after a "response"!!!  The 
problem is how to enforce these rules.  Some have tried sending 
explanatory emails to people who call in the middle of a QSO.  Possibly 
a "big gun" could break in and say "W5XXX, don't call in the middle of a 

G0MRF wrote:

Also listing stations to call in without being able to prioritise by 
geographic location will be problematic and lead to stations being 
called to make their QSO just after their LOS.

W9AE replies:

Similar problems occur with directed nets on HF.  Sometimes there is 
propagation between the aspiring DXer and the DX station, but no 
propagation between the aspiring DXer and the net control station. 
Directed nets maintain civility, but at a fraction of the productivity 
of typical on-air DX/contest chaos.

Wayne Estes W9AE
Oakland, Oregon, USA
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org