[OZAPRS] HF to VHF Confused

[David and Justine Olsen]

Tony

Thanks for your assistance I should qsy. I am suddenly getting a lot  
of data, after restarting, yet to see why.
As I said, my main concern is not that 40m is better than 30m, but it  
sure is if you can't use 30m, as is the case for a standard call like  
me.

David



On 27 Mar 2009, at 20:31, Tony Hunt wrote:

> David,
>
> Ive set up the PK232 on 7036 LSB as you said but have not decoded  
> anything
> as yet. Its running 50w into a Off centre fed dipole 1 wavetlength  
> long
> favoring your QTH pretty well. I am running Digi_Ned under windows  
> which
> will Gate pretty well anything back out to VHF here in Adelaide and  
> thus
> into the Igate at Andrews place. I could gate onto the Net direct  
> but theres
> little point with the way Digi_Ned is set up..
> Digi_ned beacons every half hour here but there is a fixed beacon  
> dead on 15
> minutes past the hour (thats 45 mins past the hour in the eastern  
> states)
> which may help you identify something even if it does not decode. I  
> just
> resynced the PC clock with the Internet so that should hold good for a
> while.
>
> I have not decoded anything as yet on 40m .  A few mins ago I was  
> agressivly
> beaconing (VK5AH-4) but nobody seemed to gate it to the Net. That  
> all could
> be because I am not netted on your frequency correctly.
>
> You said 7.036 LSB but you are using a sound card. The national  
> APRS web
> page says I should be using 7036.5 LSB so I will now QSY up slightly.
> http://www.aprs.net.au/hf_overview.php
>  Ive aligned the PK232 to work like a MFJ1278 with 2100 and 2300 Hz  
> tones. I
> will shut off the 2m beacon for VK4AH-4 and stop it getting Gated  
> to the IS
> via 2m also.
>
> As Andrew said we messed about with 40m APRS a while back and every  
> so often
> it seems to raise its head again and someone has another look at  
> it. To me
> it was not as good as 30m ( as many have noted) but if we have  
> stations
> willing to support it then lets play a while and measure it again. Its
> certainly popular in ZL as opposed to 30m. I remember trying 80m  
> from here
> to VK7 which was a dead loss. I got a decode every couple of days.  
> This is
> the whole issue when you start going down in frequency like this. Its
> inheritly noisy.
>
> What I tended to find was that 30m didnt kick in till after a 500km  
> distance
> from the Gateway and then proved pretty relaiable to about 1800km  
> and even
> 3000+km at times. 40m on the other hand seemed to get its act  
> together from
> about 50km out to about 800km and then lost the plot although at  
> times it
> could certainly make the 2000km mark the S/N ratio was struggling  
> to make a
> reliable decode.
>
> Lets see if you here anything from VK5 anyway. Will leave it running a
> while. Its certainly busy with a few different sigs on there  
> tonight PSK31
> RTTY but no AX25 as yet.
>
> Tony Hunt VK5AH
>
>
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