[OZAPRS] Hf gates CD
Glen English VK1XX
glenlist at pacificmedia.com.au
Thu Dec 7 17:55:29 AEDT 2017
tracker might well have CD but:
1) Consider that in the mobile, you wont hear any stations less than the
skip distance (unless they are 10km away) . The daytime skip distance
might be 700km.... so anyone inside that distance you wont hear cause
the ionosphere wont support it..it wont support any angles higher than
perhaps 45 degrees.
The base station though will hear lots of transmissions from lots of
stations >700km to 1500km away, so there would be significant collision
chance if the position update is too often. Maybe 10 minutes might be
suitable. I dunno why people run..
2) With a 5% to 10% efficiency mobile you wont hear too much unless
the propagation is optimal...
glen
On 7/12/2017 5:41 PM, vk4tec at tech-software.net wrote:
> Blind ?
>
> Tracker has CD
>
> -----Original Message-----
> From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of Glen English VK1XX
> Sent: Thursday, 7 December 2017 2:46 PM
> To: ozaprs at aprs.net.au
> Subject: Re: [OZAPRS] Hf gates
>
> but how does this matter?
>
> You will be transmitting on a frequency blind
>
> there will be receivers you cannot control
>
> There will be any number of propagation modes you cannot control...
>
>
>
> On 7/12/2017 3:34 PM, Andrew Rich wrote:
>> Hi
>>
>> Can I get a list of hf gates on 10.147
>>
>> In my planning for the Xmas run
>>
>> Cheers
>
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