Search found 159 matches

by VK2ZIW
Fri Nov 29, 2013 7:43 am
Forum: 50 MHz
Topic: SIX Meters or SICK Meters
Replies: 19
Views: 2827

Re: SIX METERS or SICK METERS

6m repeaters are always there, so for standard calls, use them please.

I have a VX5R connected to a 5/8 always scanning. Call on 52.050 SSB on vertical and I'll find you.

Never give up, never give up - Churchill.

Alan
by VK2ZIW
Sun Nov 10, 2013 6:51 am
Forum: 50 MHz
Topic: 6 metre radio choice
Replies: 6
Views: 1402

Re: 6 metre radio choice

I find a VX-5R Yaesu hand-held scanning all 6m repeaters and 50.110,antenna 5/8, very useful.

One thing, you need a Noise Quieting mute, not a Carrier sensing type.

Any radio with CAT control. will do.

QQE06/40s - Alan VK2ZIW QF56hg
by VK2ZIW
Fri Apr 19, 2013 7:36 pm
Forum: PC/Mac iOS Software
Topic: Antenna rotators control
Replies: 3
Views: 5311

Re: Antenna rotators control

Brainstorm ======== Stepper motors are the go.... All the computer has to do is move the required number of steps, once calibration is done. So, the computer needs no feedback on position. Calibrate by pointing to the moon or sun or a known bearing, via compass and inclinometer. The computer only ne...
by VK2ZIW
Tue Aug 14, 2012 1:59 pm
Forum: E.M.E.
Topic: Moonbounce on 1296
Replies: 114
Views: 45044

Re: Moonbounce on 1296

Hi guys,
Much is posted here on the RF side of things.

How do you point your dish accurately?

Does your rotator system track the moon?

73 - Alan VK2ZIW
by VK2ZIW
Tue Aug 14, 2012 1:37 pm
Forum: E.M.E.
Topic: Dish AZ/EL rotators
Replies: 20
Views: 10800

Re: Dish AZ/EL rotators, pointing accuracy

Hi all, Full marks to John VK5DJ for his rotator board/micro design as his protocol does 0.01 deg. accuracy. His project is not Open Source. So, only he can adapt his code for the actual hardware you have. Have a look at these Chinese gearboxes: http://www.unixservice.com.au/hamradio/rotators/Wangye...
by VK2ZIW
Mon Aug 13, 2012 9:56 pm
Forum: E.M.E.
Topic: Dish AZ/EL rotators
Replies: 20
Views: 10800

Re: Dish AZ/EL rotators

This code looks good, BUT, The Yaesu AZ/EL rotator IS the problem: 1) Not big enough for a 5m dish. 2) Not accurate enough. the GS-232 standard is 0.1 deg accuracy. We need to meet this. 4 deg. is SLOPPY. 3) The AtoD for AZ or EL is only 1024 positions, so, at best 0.3 deg accuracy. Actually, for El...
by VK2ZIW
Mon Jul 30, 2012 9:41 pm
Forum: E.M.E.
Topic: Dish AZ/EL rotators
Replies: 20
Views: 10800

Re: Dish AZ/EL rotators

Hi guys,
I've found some promising code:
http://forums.hrdsoftwarellc.com/showth ... ject/page2

I've signed up with the site and will be on to it. The Arduino is an ATMEL MegaXXX on a board (Jaycar)
by VK2ZIW
Fri Jul 27, 2012 10:33 am
Forum: E.M.E.
Topic: Dish AZ/EL rotators
Replies: 20
Views: 10800

Re: Dish AZ/EL rotators

Yes, guys, it's 5 months later, I'll get there, now in full time job.
Have an IC910H now, even more incentive.
by VK2ZIW
Thu Jul 26, 2012 3:26 pm
Forum: Contests, Field Days, Portable Operation, JOTA, SOTA
Topic: Winter VHF/UHF Field Day 18/19th June
Replies: 61
Views: 8916

Re: Winter VHF/UHF Field Day 18/19th June

Sleep, we ALL need sleep, so, how about 11pm to 5am curfew. I'm 60 and NOT getting any younger. (full stop) It was MIGHTY cold at Katoomba. FM activity is almost GONE. Reason, once a contact is made on SSB, no further points can be made by doing FM. I suggest, if the transceiver at either end is ONL...
by VK2ZIW
Thu Jul 26, 2012 3:23 pm
Forum: Contests, Field Days, Portable Operation, JOTA, SOTA
Topic: 2011 Spring VHF/UHF Field Day
Replies: 51
Views: 8026

Re: 2011 Spring VHF/UHF Field Day

Sleep, we ALL need sleep, so, how about 11pm to 5am curfew. I'm 60 and NOT getting any younger. (full stop) FM activity is almost GONE. Reason, once a contact is made on SSB, no further points can be made by doing FM. I suggest, if the transceiver at either end is ONLY FM or AM, then points, as for ...
by VK2ZIW
Thu Jul 26, 2012 3:21 pm
Forum: Contests, Field Days, Portable Operation, JOTA, SOTA
Topic: Summer Field Day 2012 (Jan 14/15) thread...
Replies: 102
Views: 13213

Re: Summer Field Day 2012 (Jan 14/15) thread...

Sleep, we ALL need sleep, so, how about 11pm to 5am curfew. I'm 60 and NOT getting any younger. (full stop) FM activity is almost GONE. Reason, once a contact is made on SSB, no further points can be made by doing FM. I suggest, if the transceiver at either end is ONLY FM or AM, then points, as for ...
by VK2ZIW
Thu Jul 26, 2012 3:20 pm
Forum: Contests, Field Days, Portable Operation, JOTA, SOTA
Topic: John Moyle Field Day 2012
Replies: 41
Views: 5636

Re: John Moyle Field Day 2012

Sleep, we ALL need sleep, so, how about 11pm to 5am curfew. I'm 60 and NOT getting any younger. (full stop) FM activity is almost GONE. Reason, once a contact is made on SSB, no further points can be made by doing FM. I suggest, if the transceiver at either end is ONLY FM or AM, then points, as for ...
by VK2ZIW
Thu Jul 26, 2012 3:06 pm
Forum: Contests, Field Days, Portable Operation, JOTA, SOTA
Topic: WIA RD Contest - How would you improve it ??
Replies: 50
Views: 6771

Re: RD Contest - How would you improve it ??

Sleep, we ALL need sleep, so, how about 11pm to 5am curfew. I'm 60 and NOT getting any younger. (full stop) FM activity is almost GONE. Reason, once a contact is made on SSB, no further points can be made by doing FM. I suggest, if the transceiver at either end is ONLY FM or AM, then points, as for ...
by VK2ZIW
Thu Jul 26, 2012 2:44 pm
Forum: Arduino, Picaxe, Raspberry Pi, and variants
Topic: Raspberry Pi on sale at last
Replies: 28
Views: 13258

Re: Raspberry Pi on sale at last

I'm Alan, a Linux buff from the Minix days. My Raspberry Pi, bought for software development, is very disappointing. Three Linux versions tried: Debian 6 GUI kills the ethernet!!! Fedora No-longer in the Pi website, runs the best Arch GUI kills the ethernet, very hard to install, past command line. ...
by VK2ZIW
Tue Feb 21, 2012 8:55 am
Forum: E.M.E.
Topic: Dish AZ/EL rotators
Replies: 20
Views: 10800

Re: Dish AZ/EL rotators

Polar mount to track the moon This is very limiting. What about ham satellites? They go everywhere. I want to use software such as HRD or SatPC32 in GS232 mode and track whatever in AZ/EL. Absolute encoders : I forgot to mention, 4096 steps/rev or better than 0.1 degree. Obviously you guys want me ...
by VK2ZIW
Mon Feb 20, 2012 8:58 pm
Forum: E.M.E.
Topic: Dish AZ/EL rotators
Replies: 20
Views: 10800

Re: Dish AZ/EL rotators, gearbox

These are the cheap gearboxes. A mate of mine brought in five, one is in Sydney for me.
Check the 90 series in 50:1 in this brochure:
www.unixservice.com.au/hamradio/rotators/WangyeWorm.pdf

alanb (at) unixservice.com.au
by VK2ZIW
Mon Feb 20, 2012 2:23 pm
Forum: FM, Repeaters, D-STAR
Topic: New Zealand 53MHz repeaters?
Replies: 8
Views: 3338

Re: New Zealand 53MHz repeaters?

31/12/2011 0150 UTC 53.650 ZL repeater worked by VK5RO VK2BVS VK7DD and me VK2ZIW, repeater has no ident
01/01/2012 0240 UTC 53.650 ZL repeater heard/triggered with 3W hand-held in car, no ident
by VK2ZIW
Mon Feb 20, 2012 12:43 pm
Forum: Towers, Masts & Transmission Lines
Topic: Stepper motors to drive a rotator
Replies: 3
Views: 1373

Re: Stepper motors to drive a rotator

With decent rotators for 5m dishes, starting at $3000, we need a supply of gearboxes and motors AND motor controllers, computer boards, to go ALL the way. Go to eBay, buy this, this and this. Go to website, get software X and build. So far I have sources for: Gearbox 50:1 35mm thru shaft (from China...
by VK2ZIW
Mon Feb 20, 2012 7:35 am
Forum: E.M.E.
Topic: Dish AZ/EL rotators
Replies: 20
Views: 10800

Dish AZ/EL rotators

Hi all, Looking at these prices $3000 and up... www.rfsolutions.com.au/products-page/big-boy-rotators/ I've been looking at doing both hardware and software myself: AZ 50:1 worm gearbox, 35mm thru shaft (China) $70 Stepper motor 28V with 15:1 gearbox and controller $100 EL 24" linear actuator $...