VK Logger Ham Radio Forum Archive

Dates from the WIA website:

Summer 2016 - Saturday 9 and Sunday 10 January.

Winter 2016 - Saturday 18 and Sunday 19 June.

Alan VK2ZIW

When looking for Meteor Scatter or airplane, a constant beacon is a must.
Drop the power. Or, go solar.

Used solar panels, panels with ground leakage or corrosion are becoming common.
We use them for low voltage, so no problem.

Alan VK2ZIW

BMARC also operated from a fixed location, location of a quadriplegic amateur Andrew VK2XPT.
We were portable in that we erected a rotated pole and 6,2,70 and 23 at his place.
He has only 2 & 70 on a vertical. East Blaxland.

Alan VK2ZIW (BMARC secretary, VK2HZ)

All these guys do PCBs.
Can I use, say copper shim over a perspex sheet and clamp it down with thicker perspex sheet
over the top?

Perspex was used a lot back in the 288 days.

Can VKCL run in a Linux environment, wine etc..?

I run Digital modes on Linux, so now have to have a 2nd laptop.

Bizarre scores when MaidenHeads are entered in capitals: 01:47 144 SSB VK2IUW 59001 59002 63 QF56HG QF56IF 01:51 50 SSB VK2IUW 59002 59003 21 QF56HG QF56IF 02:20 144 SSB VK2CZ 59003 59005 3 qf56hg qf56oe 02:22 420 SSB VK2CZ 59004 59006 105 QF56HG QF56OE 02:41 144 SSB VK2YOC 59005 59008 3 qf56hg qf5...

DMR, because WICEN are interested.

Why are DMR and Codec2 not included in the vote question?

DMR can support two talk groups on the one frequency.
That's the BIG advantage of DMR.

New laptop required.

Go for a Low Power motherboard in a desktop:
AMD: ASRock QC5000/ITX
Intel: ASRock Q1900-ITX

Both in use here to keep the 24x7 power bill down.
(Linux of course)

Any VK2s interested?

BMARC (Blue Mts.) VK2HZ will 'av a go' from Andrew VK2XPT's place, Mt Riverview.
6m, 2m, 70cm, 23cm.

Meteor Scatter, any possibility??

Alan VK2ZIW

Bend up your own. The only reason for thick copper is rigidity. Kitchen alfoil is all that is needed from an RF perspective. House damp course flashing is dead easy to work with for horns etc.. Have a look at Bunno's. My 3.3GHz horns worked a treat for Unwired (3.3GHz Navini Networks Internet, pre W...

Hi,

Blue Mts. BMARC will be trying, yes trying from Andrew VK2XPT's place Mt Riverview.
6m, 2m, 70cm, 23cm, SSB and possibly FSK441

Alan VK2ZIW (BMARC secretary.)

This upcoming VHF/UHF Field Day will have us on 50.150, so should we go
50.200 ?

Alan VK2ZIW

15db gain and both horizontal and vertical, and stackable. Short BackFire Antenna. 2.6Y x 2.6Y x 1/2Y deep. curved sides r = 1/2Y 0.6Y dia. reflector 1/2Y up from base At 23cm 60cm x 60cm x 13cm deep, octagonal, Birdcage wire mesh. crossed dipole feed 1/4Y up and hybrid for circular. Loop dipoles ma...

Adelaide is where fiberglass rod is manufactured, Look for VROD Australia. Fiberglass reo-bar for concrete. Perhaps you can get somebody to build it for you, there in Adelaide. The centre spider ( or ant, spiders have 8 legs) is easy, get some 25mm angle and bent bolts to clamp the rod in the V of t...

Another to lookat: WSQ
http://www.qsl.net/zl1bpu/SOFT/WSQ.htm

Also needs a Linux version.

Alan VK2ZIW

We need a linux program for Low Power systems eg. Raspberry Pi.
ROS is PE32 executable (GUI) Intel 80386, for MS Windows.

Alan VK2ZIW

BP/BR cavities What is missing from the VE2AZX document above? http://ve2azx.net/technical/ve2azx-duplexerinfo.pdf In this document is a picture, inside a 70cm cavity from 1976: http://www.cactus-intertie.org/LA/tec_not6.pdf Energy coupling via magnetic or capacitive coupling creates both Pass-Notch...

Meteor pings are often very short, under 1/2 sec. So, a fast bit rate mode is needed to get a "packet" through. On 6m, we tried FSK315 but the gut feel was, FSK441 was better. But, the bigger problem is, few people are running the latest software. Here, I download and compile WSJT and WSJT...

How is your local repeater cavity set going?
Does it need a new set of cavities?
http://www.unixservice.com.au/hamradio/ ... otes.html
Alan VK2ZIW

Short Backfire Antenna (SBF) Here is a publication that explains it all: http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ56152.pd f Start at page 136 And, they build a 2x2 array of them. Yes, they use waveguide feed, but the crossed dipoles wotk, just the same. We at BMARC have 50m of 1/4&qu...