[UK-CONTEST] Why do UK stations not beam to OZ in UKAC ?

[David]

Bob

First thing to know is that I have 150KM of land between myself and the
Norfolk coast so I do not get any of the over sea path enhancement that come
with being located much nearer the coast. So for Scandinavia down to
Northern France I have a lot of land in the way. The same applies to mid
France to Portugal about 150KM of land before the sea is reached.

Using exactly the same kit but from my local club's field site the
enhancement of this site compared to home QTH is at least 20dB. For instance
GB3VHF beacon is over 20dB stronger yet it is -3dB further away. From the
field site flat condition range to a reasonably sited DX station is
700-750KM and to a exceptionally sited DX station 800 to 850KM. The
difference: home QTH is 80m ASL in a valley while the field site is 240m ASL
with a perfect take off in all directions.

I could run in the QRP class from the field site and have similar TX
performance to my home QTH running full power. Yet on receive the field site
is still 20dB better.

73 David

-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com] On Behalf Of Rob Harrison
Sent: 07 August 2012 18:49
To: UK-Contest at contesting. com
Subject: Re: [UK-CONTEST] Why do UK stations not beam to OZ in UKAC ?

David,

I've rising ground up to 100m to my NW, much of where the UK is, but still 
work into GD,GI & GM. It's a struggle sometimes, but VHF is mostly, you're 
not going to get 59 QSO's 90% of the time.

BTW I can hear OZ1ALS now anywhere between 41 to 55 with AS enhancement.

73 Bob

----- Original Message ----- 
From: "David" <g3yyd at btinternet.com>
To: "UK-Contest at contesting. com" <UK-Contest at contesting.com>
Sent: Tuesday, August 07, 2012 4:32 PM
Subject: Re: [UK-CONTEST] Why do UK stations not beam to OZ in UKAC ?


> Rob
>
> It depends on if you have rising or falling ground in the beam direction. 
> I
> live in a valley - enough said?
>
> 73 David G3YYD
>
> -----Original Message-----
> From: uk-contest-bounces at contesting.com
> [mailto:uk-contest-bounces at contesting.com] On Behalf Of Rob Harrison
> Sent: 07 August 2012 15:28
> To: UK-Contest at contesting. com
> Subject: Re: [UK-CONTEST] Why do UK stations not beam to OZ in UKAC ?
>
> David,
>
> I think you do yourself an injustice.
>
> I'm running 50w (FT-847 no pre-amp) to an 11 ele LFA at 13m AGL, 60m ASL,
> and am 741km from Allan's contest site. I hear him 70% of sessions, albeit
> weak and probably work him 40% of the time, on SSB. Yes I'm a bit nearer 
> the
>
> east coast than you in JO01FO, but only 9km nearer in a straight line.
> Granted Allan's station is running QRO and large antennas, but that makes 
> up
>
> for my end of the QSO. Taking OZ out of the equation, there are many near
> continent stations well within 500km of you. I don't know your QTH, so 
> have
> no idea of the topography and whether you are shielded towards Europe. It
> would be more difficult to make a 750km contact within the UK, due to
> activity and geography.
>
> It seems you're telling yourself you won't make it before you try. There's
> an awful lot of enhancement due to aircraft scatter over the North Sea, 
> and
> it can and does make up the difference. In fact I'd says 95% of contacts
> over 200km are made using this mode in the UK, and not true tropo', the 
> QSB
> is far too rapid and uneven.
>
> Accepted there won't be any mult' involved with European stations. But if 
> we
>
> carry on like this, they won't beam this way at all ; it's becoming
> noticable already. That doesn't altogether matter in UKAC, but in bigger
> contests it's a worrying trend.
>
> 73 Bob G8HGN
>
>
>
>
>
>
>
> ----- Original Message ----- 
> From: "David" <g3yyd at btinternet.com>
> To: "UK-Contest at contesting. com" <UK-Contest at contesting.com>
> Sent: Tuesday, August 07, 2012 3:23 PM
> Subject: Re: [UK-CONTEST] Why do UK stations not beam to OZ in UKAC ?
>
>
>> Allan
>>
>> I am 750KM from your QTH. The normal troposcatter range for my station is
>> about 500 to 550KM on SSB and about 120KM more on CW. So even on CW I am
>> short by more than 100KM. In 2m troposcatter terms that would mean I need
>> at
>> least 11dB improvement to be able to have a CW QSO with you. SSB requires
>> almost 25dB more.
>>
>> I am already running UK full power so I would need to increase my antenna
>> from a single 12 el (6m boom length) Yagi at 21m AGL to 16 by 12el Yagis.
>> If
>> I went illegal and ran 1KW (+4dB) the antenna would need to be at least 6
>> by
>> 12el Yagis - not practical for this QTH.
>>
>> Conclusion: I can only QSO with you by moving to the English east coast.
>> If
>> I moved to East coast for UKAC I would be beaming away from you into the
>> UK
>> to maximise my mults.
>>
>> 73 David G3YYD in IO91TR.
>>
>>
>> Allan, oz7z from OZ1ALS wrote:
>>
>> We at OZ1ALS are qrv with 2 times 8x4 + 4x6 elements and 1KW.
>>
>> We have 8x4 beaming to JO01 all evening
>>
>> You will find us on 144.307 most of the time.
>>
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>
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