[OZAPRS] How much power do you use while HF mobile?

[VK4UN]

Look at the attachment, I did have good HF when I tripped through Uluru area 
on the 23rd May 2010, 30 meters worked fine as did 20 meters


vk4un

----- Original Message ----- 
From: "Ian Bennett" <ibennett at tpg.com.au>
To: "Australian APRS Users" <ozaprs at aprs.net.au>
Sent: Friday, June 10, 2011 9:38 PM
Subject: Re: [OZAPRS] How much power do you use while HF mobile?


> Nowra sounds like Uluru; absolute black hole for RF. No APRS, no VKS737, 
> no
> Amateur HF bands either.
> Compare that with Dalhousie Springs; probably the best RF site I've come
> across thus far :-)
>
> On Fri, 10 Jun 2011 20:27:47 Damien Gardner Jnr wrote:
>> True I think - having pulled into Nowra, and (temporarily) fixed my
>> antenna, with it lightly raining, and very overcast, I can't get a packet
>> out even on 100W!  I even sat there for five mins turning the OT1+ on and
>> off every 30 seconds, so it would keep sending posit packets, but not a
>> brass razoo ended up on the APRS network!
>>
>> --DG
>>
>> On 10/06/2011, at 8:06 PM, Gordon VK4VP wrote:
>> > Damien,
>> > I usually run about 70W mobile, but there are certainly locations
>> > where it doesn't make much difference how much power you run, you have
>> > trouble getting in.  The band conditions are what makes the difference 
>> > I
>> > think.
>> >
>> >
>> >
>> > Regards,
>> > Gordo VK4VP
>> >
>> > -----Original Message-----
>> > From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
>> > Behalf Of Damien Gardner Jnr
>> > Sent: Friday, 10 June 2011 18:35
>> > To: Australian APRS Users
>> > Subject: [OZAPRS] How much power do you use while HF mobile?
>> >
>> > Hi Folks,
>> >
>> > So I dug out a spare welding rod, and made a new tip for the 30 metre
>> > whip on the the car, so I could run HF as well as VHF while we're away
>> > this long weekend.  Didn't last long, it disappeared somewhere through
>> > kangaroo valley, but we did get excellent coverage all the way down 
>> > till
>> > then :) Will go hunting around nowra tomorrow and see if I can find a
>> > source of 3mm welding rods, or (haha not a chance) 3mm stainless rod, 
>> > but
>> > for now I picked up a $4 fold-out mosquito net thingo from the camping
>> > section at kmart, for putting over a plate..  That had about 1mm rods 
>> > in
>> > it, cut it to the 152mm I usually cut to, but it was centered about
>> > 300khz too far up the band..  cut a new one 3cm longer, and bingo, 1.1
>> > swr on 10.1mhz :)  Gotta say having the LCD backlight set to go from 
>> > blue
>> > to red on SWR during transmit is absolutely fantastic - you know 
>> > straight
>> > away if something's wrong!
>> >
>> > Anyway, my question - While i was giving the car a test-drive with the
>> > antenna on, on thursday morning, I had my HF SSID appear on my D710 -
>> > seems it was picked up somewhere and gated around about and ended up 
>> > out
>> > on VHF via an igate...  What did surprise me, was I still had the 857 
>> > set
>> > to 5w, from tuning in the antenna!  Now I usually run 50w on HF, but
>> > having done lots of playing with PSK31 and the like recently, I'm
>> > realising that power really doesn't make a whole lot of difference on 
>> > HF,
>> > and having landed in noosa on 5w, I'm wondering if I need to be running
>> > 50W..
>> >
>> > Sooo - what power do folks usually run on HF APRS? :)
>> >
>> > Cheers,
>> >
>> > Damien
>> >
>> > VK2TDG
>> > _______________________________________________
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>> >
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