[OZAPRS] Igate to RF

[Mike Zwingl oe3mzc]

Gday,
in OE we have a second QRG (local) on 70cm in urban areas just for handhelds 
like VX-8 and THD7...
so this will cope with the lower power of these HTs,
...with just one bidirectional IGate/Digi for messages,
and NO WIDEn-N traffic, so only WIDE1-1 (ex-RELAY) will be digipeated,
so you can have posits every 30 seconds, without messing up the channel.

hope this helps in the discussion.
vy 73 de OE3MZC
Mike

----- Original Message ----- 
From: "Jack Chomley" <radio at irock.com.au>
To: "Australian APRS Users" <ozaprs at aprs.net.au>
Sent: Monday, August 30, 2010 3:17 AM
Subject: Re: [OZAPRS] Igate to RF


> Richard,
>
> My aim was to see more use of the national freq for  people on road  trips 
> outside their local area, the secondary freq for use by people local to a 
> single digipeater, in a local area combined with a local Igate.
> Try using one of the newer APRS HTs on the national frequency, you will 
> see what I mean.
> In some places no problems, in others with higher traffic loads it's 
> difficult.
> Our user base is changing over time, we need to recognize that changes may 
> need to be made. Me seeing a fill in digi beacon from over 600km away, 
> sent to RF via our local Igate is NOT prudent.  Many  Qld digis are solar 
> powered. Yes, every area has differing requirements and I put up my idea 
> for a secondary freq for local use only and with lighter traffic loads 
> make it easier for low powered APRS stations to get access. The secondary 
> freq Igate can RF gate messaging capable radios within a reasonable radius 
> of the local area. This would probably make messaging more reliable, too.
> I don't want this to become a blowtorch subject, but It would be great for 
> many people to discuss and add good ideas. Ultimately, we all end up with 
> solutions that will suit our respective geographical areas.
>
> 73,
>
> Jack. VK4JRC
>
>
> Sent from my Apple iPad Tablet PC
>
>
> On Aug 30, 2010, at 10:50 AM, "Richard Hoskin" <vk3jfk at wia.org.au> wrote:
>
>>
>> The AIM of APRS is to have one National 2mtr frequency that will allow a
>> mobile station when ever it is in range to access the network.
>>
>> The operator of the station does not need or want to constantly change
>> frequencies to 'get in' when travelling out of his / her local area. This 
>> is
>> why 145.175 Mhz was established as the primary ARPS channel.
>>
>> The UHF APRS frequency of 439.100 MHz was established to provide an APRS 
>> RF
>> channel for Home stations with additional services that are not suitable 
>> for
>> the VHF channel due to band wide limitations. This will leave the VHF
>> channel available for Mobile & Country station.
>>
>> To accommodate the requirements of all and fulfil the primary objective 
>> of
>> the National 2mtr frequency for APRS the following strategies where 
>> adopted
>> by VK3
>>
>> Snip....
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