Hi Hans.
Problem is... An amateur radio contests, are a massive concentration of
lids in a pretty short period of time.
Though there are codes of conduct that apply. It remains one of the most
cahotic and anarchic ways of competition from end to end.
It is not like a DXpedition. DXpeditions are active for five, seven, ten or
fourteen days, resulting in what seems to be a lower LCF (Lids
concentration factor) than during contests. But since the LCF is measured
in Lids per Kilocycle effectively used during a given period of time,
throughout 2012, there have been DXpeditions producing LCFs even higher
than the best of contests altogether. The closer you get to the dxcc most
wanted list the higher the LCF produced by a DXpedition is.
Some contests tend to have an LCF higher than others. It depends on whether
it is SSB, CW or RTTY, World Wide or Continental.
The only contests with a very low LCF to my knowedge - there may be
others- are: NA Sprint (CW/SSB/RTTY), The Stew Perry Top Band Challenge and
probably the CQ and ARRL 160 M contests. The sprints because of his own
beauty and nature (QSO/QSY) and Top band mostly because it is a place where
the vast majority of lids can't do any harm. Only those who have achieved a
considerable ammount of technical and operational knowledge can succed
there.
The rest is CHAOS! At least, that seems to be the tendency. In other
words, if you need to work them fast, you have to spread them all over the
spectrum ;-)
This, in fact, is all done to help keep the sanity of the ham HF radio
spectrum.
Otherwise, Lids will start over-loading their amps when they see it's
taking longer than usual to work the mult and they will end up using
even more bandwidth -than if they were working split-, because of the
distorted modulation.
In the end, it all depends on the money you have (the rigs, amps and
antennas you can afford) and how much of an HF Spectrum Maffia capo you are
when it comes fighting with others for a frequency or to be heard in a pile
up.
I guess the LCF can be lowered to a decent degree in the years to come
using SDR recordings. Or proabaly it will just be another optimistic
utopia, considering we are talking about enforcing the behavior of
thousands of people at the same time spreaded across thousands of possible
frequencies.
Vy 73.
Martin, LU5DX
On Mon, Aug 27, 2012 at 4:17 PM, Radio K0HB <kzerohb@gmail.com> wrote:
> I'm lost on this one, guys.
>
> Why should a station (just because they're low power, or DX) be privileged
> above us "commoners" to a second QRG for clear reception?
>
> Good luck on this one now!
>
> 73, Hans, K0HB
>
> -----Original Message-----
> From: Tom W8JI
> Sent: Monday, August 27, 2012 4:57 PM
> To: Pete Smith N4ZR ; cq-contest@contesting.com
> Subject: Re: [CQ-Contest] Split operation in CQ WW CW
>
> > the ruck without anyone having to send "up one" or whatever. I'm sure
> > Bob was talking about the up 5 splits, not something within 300 Hz or so.
>
> What is the difference in spectrum used if the pile is 500 Hz up, or 5000
> Hz
> up?
>
> The spectrum used is dependent on the bandwidth of the signals and the
> spread around a second frequency, not how far away the second frequency
> is.......once it does not overlap the TX channel width.
>
> There might be a logical reason I'm missing. I'm trying to understand the
> "ruckus" about a 5 kHz split wasting space, when the same exact space is
> used with a 2 kHz split or a 1 kHz split.
>
> If the split is 5 kHz and the stations using that split have emission
> confined within 500 Hz, they use an extra 500 Hz over single frequency. If
> the split is 1 kHz, they still use an extra 500 Hz. The use is at a
> different spot, but still extracts exactly the same total spectrum from
> other use.
>
> If someone is at 7.005 and working simplex and most people have all
> emissions within 500 Hz of width (+ - 250 Hz) they use 500 Hz from 7.00475
> to 7.00525 kHz. If they listen up 500 Hz, they simply move that 500 Hz
> slice
> up the band from 7.00525 to 7.00575 kHz.
>
> If they move it 5 kHz or 100 kHz up the band, they still "hog" the same
> total space.
>
> I'm trying to figure out what people are trying to say, because it has
> nothing to do with the split distance once it is all outside the one
> transmit channel width.
>
> 73 Tom
>
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