[Meteor-Scatter] Random Working on FSK-MS...

[Russ Pillsbury]

Hello Bernd. Your findings are in agreement with mine.  Having multiple
stations calling at the same time does not usually result in any problems.
When I have HSMS skeds for a VHF contest, I usually run for 30 minutes.  I
tell my sked partners to start calling me at the scheculed start time even
if they can hear that I have not completed with my previous sked.  That way
I will often already have calls when I finish with the previous sked and can
go right into sending the calls and report (our contact format being a
little different than yours).

Similarly when sharing the HSMS calling frequency, it usually is no problem
if two or more fairly local stations are calling CQ at the same time.  Dx
stations will usually hear them all on different pings (or different dx
stations will hear different stations on the same ping), due to the
different distances and directions involved.  Of course it is essential to
use an up/down frequency offset when calling cq because it can get very
confusing if several QSO's are taking place on one frequency.

In my experience most newcomers are reluctant to call CQ "on top of" another
local on HSMS.  This is understandable since we cannot do this in normal VHF
situations without causing QRM, but for HSMS it works very well.  For that
reason it is good to post information like this to help them up the learning
curve.

Very 73, Russ K2TXB

> -----Original Message-----
> From: meteor-scatter-bounces at mailman.qth.net
> [mailto:meteor-scatter-bounces at mailman.qth.net]On Behalf Of
> DF2ZC1 at t-online.de
> Sent: Wednesday, September 22, 2004 8:51 AM
> To: meteor-scatter at mailman.qth.net
> Subject: [Meteor-Scatter] Random Working on FSK-MS...
>
>
> Hello All,
>
> I'm afraid I'm starting a controversial thread now how to proceed on
> Random in FSK441 but I'd just like to communicate some experiences from
> my recent (family holiday!) activities from IN77UW in August.
>
> To sum it up: It was very helpful that some stations called into QSOs in
> progress but close to being completed,  for example, when I was sending
> a R-Report.  As long as the QTH of those "callers" would not be less
> than let's say 100 km from the QTH of the station I was working it
> didn't interfere because not the same reflexions were used.
>
> So while sending my R-Report and waiting for the Rs of my partner I
> became aware that for example DL1ABC was calling me already. In this
> case it's very important that DL1ABC is not just calling me with
> callsigns only but with a report already, such as "F/DF2ZC DL1ABC 26
> 26".
>
> Of course this applies only if he has indeed copied me. If he did not
> copy me at all then he should not even think of calling me.
>
> Then after receiving the expected RRRs from my QSO-Partner I would
> immediately switch over to sending "DL1ABC F/DF2ZC R27 R27" or so. This
> speeds up the whole QSO process as you can imagine. And it is of course
> all according to the rules.
>
> I repeat: I didn't feel like I was having trouble with multiple signals
> on my rx frequency - as long as the stations were not geometrically
> close to my current QSO-Partner. Instead, I was in a position to make a
> list of stations calling me which I could reply one after the other
> without timeconsuming CQs again. One important condition is that the
> stations stay on freqency and continue listening for me coming back to
> them.
>
> I will be in JM87BX hopefully on 23 October this year for very few hours
> starting at local sunrise with 100 watts, a 9 ele Tonna and good
> take-off to North (as checked by DH7FB earlier this year), Random only.
> I will tx on .361 1st seq and I will listen between .363 and .368.
>
> Travelling some 500-600 km in total from my holiday QTH in JM89AD it's
> not surprising I want to make as many QSOs as possible to give the rare
> square. So don't hesitate to call me for some (not permanently)
> sequences if you copy me sending a R-report. AND THEN STAY ON FREQUENCY
> LISTENING! You may assume I quickly copy you and you are on my list
> then.
>
> If I send a R-Report and receive RRRs I will NOT reply them with my own
> RRRs (which is not necessary according to the rules) but continue with
> the next station or call CQ. When I receive a R-report and reply with
> RRRs I will of course stay tuned until I have received RRRs.
>
> I will try to communicate all complete QSOs immediately via DX Cluster,
> by myself from down there or by telephone QSP to a friend.
>
> CU!
>
> vy 73 Bernd DF2ZC (JO30RN)