[OZAPRS] Proposed digi for Mt Nardi
Ray Wells
vk2tv at exemail.com.au
Wed Aug 11 16:41:37 EST 2010
Steve,
SSID -1 is generally used for digi's
Ray vk2tv
On 11/08/10 12:20, Steve Sharp wrote:
> G'day Ray - all looking good, one final question should the SSID be
> VK2RPL-1 or -3?
> I'm leaning towards -1, but am happy to be corrected before it is
> written in and sent on it's way;-)
> Steve VK2POO
>
> On 10 August 2010 13:59, Ray Wells <vk2tv at exemail.com.au
> <mailto:vk2tv at exemail.com.au>> wrote:
>
> Steve,
>
> 83m is 272 ft, close enough to the 300 I guessed.
>
> 800m is a tad higher than what SPLAT! (and Google earth) thinks it
> is but still close enough, especially given the step sizes
> available for HAAT and Power.
>
> HAAT - Height Above Average Terrain
>
> Pick 0dB gain and the nearest height and you won't be too far off.
> It's only a guide.
>
> Ray vk2tv
>
>
> On 10/08/10 09:27, Steve Sharp wrote:
>> The tech got back to me with the following:
>> "Antenna Gain is going to be 3db to start with but then unity
>> when we get around to putting the 2m repeater up there , HAAT not
>> sure what it means but antenna hight is 83m above ground or 883m
>> above sea level"
>> Sound about right?
>> Steve VK2POO
>>
>> On 10 August 2010 07:48, Ray Wells <vk2tv at exemail.com.au
>> <mailto:vk2tv at exemail.com.au>> wrote:
>>
>> Hi Steve,
>>
>> From SPLAT!, the pgrogram that produced the plots, HAAT is
>> 2073.38 ft. I guessed an antenna height of 300 ft when I did
>> the plots. Take the difference between 300 and the "real"
>> antenna height and add/subtract from 2073 and you'll have
>> your figure.
>>
>>
>> Typical antennas gains are
>> 1. dipole - probably 1dB in some direction, depending on
>> distance from support mast
>> 2. 2 x dipole - 3dB
>> 3. 4 x dipole - 6dB
>> 4. double extended Zepp (each dipole half = 5/8) 3dB
>> 5. 3 halfwaves in phase = 3dB
>>
>> An error of 1-2dB in your "guess" will be mostly
>> insignificant on the radius of the resulting coverage circle.
>>
>> Cheers ... Ray
>>
>>
>> --==[ SPLAT! v1.2.1 Site Analysis Report For: Nardi ]==--
>>
>> ---------------------------------------------------------------------------
>>
>> Site location: 28.5447 South / 206.7138 West (-28� 32' 40" S
>> / 206� 42' 49" W)
>> Ground elevation: 2608.27 feet AMSL
>> Antenna height: 300.00 feet AGL / 2908.27 feet AMSL
>> Antenna height above average terrain: 2073.38 feet
>>
>> Average terrain at 0 degrees azimuth: 689.75 feet AMSL
>> Average terrain at 45 degrees azimuth: 756.54 feet AMSL
>> Average terrain at 90 degrees azimuth: 1060.91 feet AMSL
>> Average terrain at 135 degrees azimuth: 1151.16 feet AMSL
>> Average terrain at 180 degrees azimuth: 686.42 feet AMSL
>> Average terrain at 225 degrees azimuth: 585.24 feet AMSL
>> Average terrain at 270 degrees azimuth: 919.58 feet AMSL
>> Average terrain at 315 degrees azimuth: 829.48 feet AMSL
>>
>> ---------------------------------------------------------------------------
>>
>>
>>
>>
>> On 09/08/10 18:28, Steve Sharp wrote:
>>> G'day Ray - project is on the move again - the GM300 has
>>> been repaired and aligned and I have taken a look at the
>>> digi_ned link you sent regarding PHG and I'm sure we can add
>>> it as soon as the tech tells me the HAAT and gain of the
>>> antenna.
>>> At this stage I have to program up the Foxdigi witht he site
>>> info and post it away to the installer who will get it up on
>>> Nardi next time he is workign at the site.
>>> Hopefully this'll kick interest along and we'll get some
>>> others up in the months to follow.....
>>> 73 de Steve VK2POO
>>> On 23 July 2010 13:36, Ray Wells <vk2tv at exemail.com.au
>>> <mailto:vk2tv at exemail.com.au>> wrote:
>>>
>>> Hi Steve,
>>>
>>> PHG is (P)ower, (H)eight, (G)ain and is sent in a beacon
>>> as in this UIDigi example from VK2RMC-1. Software that
>>> handles PHG will display a coverage circle around the
>>> digi site based of the information transmitted by the digi.
>>>
>>> Beacon1Text =
>>> !3056.77SS15243.92E#PHG5513/ Kempsey, NSW
>>>
>>> Beacon2Text =
>>> !3056.77SS15243.92E#PHG5513/ Kempsey, NSW
>>>
>>> Beacon3Text = :146.875-
>>> *111111z3048.00S/15255.00Er R50k
>>>
>>>
>>> The 5513 says
>>> 5 25W
>>> 5 antenna 320 feet above average terrain
>>> 1 1dB antenna gain
>>> 3 pattern offset towards 135 degrees.
>>>
>>> Take a look here for further explanation
>>>
>>> http://digined.pe1mew.nl/?How_to:Calculate_PHG_information
>>>
>>> The extra S after Latitude causes a green star with the
>>> letter S to be displayed as the digi icon.
>>>
>>> Beacons 1 and 2 are identical except for the path.
>>> Beacon 1 has no path set so it is not transmitted beyond
>>> the local digi. Beacons 2 and 3 have a path of WIDE2-2
>>> so that the beacon will be digied over two hops.
>>>
>>> Beacon 3 is reporting the frequency and offset
>>> (146.875-), time, location and range of the local voice
>>> repeater. The series of 1's indicates that time is not set
>>>
>>> Howzat?
>>>
>>> Ray vk2tv
>>>
>>>
>>> On 23/07/10 12:53, Steve Sharp wrote:
>>>> G'day Ray - Ok, I said I was new, so what is PHG apart
>>>> from a TLA?
>>>> Steve
>>>>
>>>> On 23 July 2010 12:45, Ray Wells <vk2tv at exemail.com.au
>>>> <mailto:vk2tv at exemail.com.au>> wrote:
>>>>
>>>> Steve,
>>>>
>>>> Wow! Nardi is a great site and will provide good
>>>> coverage of northern vk2.
>>>>
>>>> Just a suggestion, can you include PHG in your
>>>> beacon for PHG circle display?
>>>>
>>>> Well done.
>>>>
>>>> Regards, Ray
>>>>
>>>>
>>>>
>>>> On 23/07/10 12:12, Steve Sharp wrote:
>>>>> I'm building up a digi for the Summerland club who
>>>>> are going to place it on Mt Nardi.
>>>>> http://tinyurl.com/Mt-Nardi
>>>>> Now I'm the first to put my hand up and say I'll
>>>>> have a go - but sadly my skill set is a little
>>>>> light so I thought it best to get some feedback
>>>>> from people who have more experience in this field
>>>>> and hopefully get it right the first time;-)
>>>>> I'm using a foxdigi and seem to be getting the
>>>>> desired effect and it is repeating (most) of the
>>>>> packets it receives from VK4RGC-3.
>>>>> I have configured it thus, but not sure that I
>>>>> have the optimum settings yet....(obviously MYCALL
>>>>> and the BTEXT location will be changed for it's
>>>>> installation site)
>>>>> ECHO ON
>>>>> TXDELAY 64
>>>>> GPS $GPGGA
>>>>> TRace OFF
>>>>> MONitor ALL
>>>>> DIGIpeater ON
>>>>> BEACON On EVERY 30
>>>>> UNPROTO WIDE1-1 V WIDE2-2
>>>>> MYCALL VK2POO-3
>>>>> MYALIAS WIDE2-1
>>>>> BTEXT !2814.23s/15330.09e#/FoxDigi Testing for SARC
>>>>> Any tweaks?
>>>>> 73 Steve VK2POO
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>
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