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Re: [Amps] new amp race / antenna take-off angle

To: AMPS <amps@contesting.com>
Subject: Re: [Amps] new amp race / antenna take-off angle
From: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 23 May 2017 20:20:50 +0800
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Not in this part of there world, there ain't no 10m limit.

Most suburban masts are around 15m to 20m high. All applications are assessed on an individual basis. There are moves afoot to have a 10m minimum ratified across the country but that has not happened yet. If it does, it means, you will not have to ask for permission to put up a mast of that height. Anything bigger, you'll have to ask.

Of course, in rural areas, the sky is the limit.

73, Alek.
VK6APK

On 23/05/2017 8:01 PM, Jim Thomson wrote:
Date: Sun, 21 May 2017 19:14:09 +0930
From: "Leigh Turner"<invertech@frontierisp.net.au>
To: "'AMPS'"<amps@contesting.com>
Subject: Re: [Amps] new amp race / antenna take-off angle

<Precisely correct Peter!

If the HF antenna lobe take-off angle is fortuitously optimal for enabling a
given DX hop path then QRP Tx power will wing it!

No amount of Tx power or Rx sensitivity / SNR will compensate if this sweet
spot in the prevailing ephemeral propagation path is missed...

73

Leigh
VK5KLT

##  Both VK land + germany have  a 10 meter...  aka 33 foot height limit.  That 
now effectively
just destroyed amateur radio.  I dont know what take off angle  you are 
blathering  on about leigh.
At just 33 ft  with your height restriction.... the only angle you are  gonna 
have is either straight up...
or into the side of you neigbours home.   33  ft will not clear anything, and 
is  100%  ineffective.
Utility poles around  na are  typ 40 ft high,  with  the hv wire another 1.5 ft 
above that.   The typ home,
with its well grounded chicken mesh, just beneath the stucco.  Toss in your  
400  watt useless ..legal
limit, and you are doomed to failure.

Jim  VE7RF
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