[OZAPRS] VK2RCC not working
ibennett at tpg.com.au
Tue Jan 7 15:18:59 EST 2014
As mentioned previously, I use a Wagner 1729 for my HF APRS. It is an old crystal controlled unit
built in Australia in the 70's I believe.
Any of the old Wagner/Codan radios used for SES/RFDS work in that period can be coaxed into working
in the 30m band however the output filters may need a tweak if you are fussy about efficiency.
Just feed the AFSK tones from your tracker of choice into the mic input, adjust the level so you
are just under ALC threshold and that's about it.
I had extra mounts welded on my bullbar to accommodate the APRS whip and multiband HF antenna (was
a FAMPARC, now a Tet-Emtron two piece) which I use for voice and data from my IC-706MkIIG.
I found a recipe for winding a HF whip (can't remember where I found it but happy to share if
anyone is interested), which is aimed at the old 6ft whip used for 27M CB. In short, you pull it to
bits and use the blank to replace the windings.
I was given a 2m long whip wound for 4055KHz, so I removed all the wire and rewound it for 30m. It
has served me extremely well on many trips.
Don't get caught like I did and tune the antenna bare, then apply the heatshrink. Tuning the thing
was the longest part of the process as I had to readjust every time I added a length of heatshrink.
On 06/01/14 17:43, Liz wrote:
> On Mon, 06 Jan 2014 12:55:20 +1100
> Ray Wells <vk2tv at exemail.com.au> wrote:
>> Hi John,
>> Thanks for your input.
>> Please understand I was not being critical, I really do understand
>> the problems that distance can create, and gear does go down. My one
>> regret is that I was unable to experience "normal" vhf aprs coverage
>> in that part of the state because I think it would have been even
>> more impressive than it already was.
>> Ray vk2tv
> I agree with Ray. APRS coverage on VHF is improving, but the more sites
> we have, the more times we will have breakdowns.
> I, too, "need" HF APRS for some places I go which are out of reach of
> all VHF repeaters, the mobile telephone systems etc.
> If I went the 30 metre route
> what antenna? (mounting it is problem number 1)
> and what gear?
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