Search found 60 matches

by VK7ZA
Wed Jul 13, 2016 7:59 pm
Forum: General Discussion
Topic: Spectacular lightning wiped out all broadcast radio. Why?
Replies: 7
Views: 1123

Re: Spectacular lightning wiped out all broadcast radio. Wh

Interesting idea. Thanks Damien.

Yes, we rarely get any sort of thunder and lighting down here, certainly not compared to what was common place in Qld! Most times, like this one, it was a one off, not part of a thunderstorm per se.

Lance
by VK7ZA
Wed Jul 13, 2016 3:03 pm
Forum: General Discussion
Topic: Spectacular lightning wiped out all broadcast radio. Why?
Replies: 7
Views: 1123

Spectacular lightning wiped out all broadcast radio. Why?

I've got a bit of a mystery that I'd love someone to explain what was happening. Driving home late last night, the mother of all storms was in progress. Both hands gripped to the steering wheel to keep the Prado from being blown off the road, mellowing to Triple-J on the radio. There was no lighting...
by VK7ZA
Thu Apr 14, 2016 10:05 am
Forum: Satellites & Balloons
Topic: SSTV from ISS
Replies: 50
Views: 3292

Re: SSTV from ISS

I'm super stoked. I listened to the pass yesterday with my kids. So this morning I installed some decoding software and managed to grab these. First SSTV decoding ever, made all the more exciting that it was the ISS. More detail of the experience here: http://lance.conryclan.com/home/international-s...
by VK7ZA
Thu Feb 11, 2016 8:52 am
Forum: LF, MF, HF
Topic: Help selecting and purchasing toroids
Replies: 2
Views: 676

Help selecting and purchasing toroids

Sometimes the internet is great because there's lots of information, and sometimes it's painful because there's lots of information. When it comes to selecting and purchasing toroids I've done so much research and reading, yet I can't see the wood for the trees. As such, I've got some specific quest...
by VK7ZA
Wed Feb 10, 2016 12:12 pm
Forum: Satellites & Balloons
Topic: AO-85 Amazing foot print
Replies: 19
Views: 1410

Re: AO-85 Amazing foot print

To include AO-85 in Gpredict it is necessary to download the tle's from AMSAT-NA http://www.amsat.org/amsat/ftp/keps/current/nasabare.txt This file contains all the amateur sats. of interest as well and could be set as the default update location instead of CELESTRAK. Thanks Rob, that worked a treat!
by VK7ZA
Mon Feb 08, 2016 4:13 pm
Forum: Satellites & Balloons
Topic: AO-85 Amazing foot print
Replies: 19
Views: 1410

Re: AO-85 Amazing foot print

VK4WDM wrote:It does not seem to get a lot of use.
I had a look again today and g-predict still doesn't show the satellite even after an update. Hopefully that will be resolved soon. If the other tracking applications rely on the same datasets, that may account for the lack of people working through it.
by VK7ZA
Wed Feb 03, 2016 4:59 pm
Forum: Towers, Masts & Transmission Lines
Topic: Securing coax to colorbond roof.
Replies: 17
Views: 1393

Re: Securing coax to colorbond roof.

Just to provide closure for all those following this thread and losing sleep wondering how I got on... I followed Hayden's suggestion and didn't bother securing it at all, just let it hand down the 45 degree pitch with a loop where it round the gutter providing a bit of tension. In that time we've h...
by VK7ZA
Tue Jan 26, 2016 12:06 pm
Forum: Ancillary, Test Equipment, Components & Parts
Topic: What is a Bridge Detector?
Replies: 4
Views: 807

What is a Bridge Detector?

Wow, well done guys. My google-fu must be on the fritz.

I'll try contacting them to see if they have any info. I don't think I'll bay $20 just to find out what something does though :)
by VK7ZA
Tue Jan 26, 2016 11:46 am
Forum: Ancillary, Test Equipment, Components & Parts
Topic: What is a Bridge Detector?
Replies: 4
Views: 807

What is a Bridge Detector?

I was given a Bridge Detector that was destined for the scrap heap, because it looked like a fun enclosure for a project. However it would be good to know what it is supposed to do. Other than the manufacturer name, which is a little dubious, it looks pretty cool. So over to you. What is it in today...
by VK7ZA
Wed Jan 13, 2016 2:22 pm
Forum: Towers, Masts & Transmission Lines
Topic: VK4 Tower Regs
Replies: 23
Views: 2300

Re: VK4 Tower Regs

What Mike said. Objectively speaking, towers and antennas are ugly for the general populous, just as are old car bodies in people's front gardens. Hams like antennas and towers and car rebuilders like old car bodies. We just need to be considerate of our neighbours and remember that suburbia really ...
by VK7ZA
Sun Dec 27, 2015 8:57 pm
Forum: Satellites & Balloons
Topic: Satellites - Some newbie questions
Replies: 10
Views: 698

Re: Some newbie questions

While I'm no expert at this, I'm on the journey, so have done a significant amount of fiddling and reading over the past six months or so. As such, take this as the knowledge of an enthusiastic amateur, rather than a satellite guru. A three element 2m antenna, and a seven element 70cm yagi give you ...
by VK7ZA
Thu Oct 15, 2015 1:28 pm
Forum: Transceivers, Transmitters & Receivers
Topic: IC-208h won't power on anymore
Replies: 15
Views: 1266

Re: IC-208h won't power on anymore

:clap: http://s27.postimg.org/y2ubxxi77/WP_20151015_002.jpg Adam, Barry, Dion and Peter, thanks so much for your help. If you'd be so kind as to PM me your paypal email address, I'd love to buy you each a beer or coffee. I won't be able to be with you in person, but as you sip it, you can know that ...
by VK7ZA
Thu Oct 15, 2015 12:10 pm
Forum: Transceivers, Transmitters & Receivers
Topic: IC-208h won't power on anymore
Replies: 15
Views: 1266

Re: IC-208h won't power on anymore

Thanks for the explanation Peter! ... and don't put in a wire jumper unless you have a death wish :om: Haha, that's exactly what I planned on doing. In that case I'll order some 1ohm resistors and see how I go. Dion, I'm interested on what guided you to R513? Was it that you recognised it as a fuse?...
by VK7ZA
Thu Oct 15, 2015 9:25 am
Forum: Transceivers, Transmitters & Receivers
Topic: IC-208h won't power on anymore
Replies: 15
Views: 1266

Re: IC-208h won't power on anymore

Whats R513 doing? Whats its resistance? Whats the volts drop across it with the head connected? First, the resistance values of R513, which should be 1ohm: No power, no head: 18k No power, w/ head: 160k w/ power, no head: 36k-45k (fluctuates) w/ power, w/head: open circuit (too high to measure) Sec...
by VK7ZA
Wed Oct 14, 2015 2:54 pm
Forum: Transceivers, Transmitters & Receivers
Topic: IC-208h won't power on anymore
Replies: 15
Views: 1266

Re: IC-208h won't power on anymore

The plot thickens. The head works fine, when I power it independent of the base. I managed to expose the connection (base to head) pins while the head is connected, and noted that the 13.8 line is only hovering at .5V. Unplug the head and it goes back up to 13.8. Hmmmm. If it were a simple short in ...
by VK7ZA
Wed Oct 14, 2015 12:49 pm
Forum: Transceivers, Transmitters & Receivers
Topic: IC-208h won't power on anymore
Replies: 15
Views: 1266

Re: IC-208h won't power on anymore

Thanks for the pointers Adam and Barry. I don't know what happened with the service manual, sorry. It can be found at http://www.repeater-builder.com/icom/pdfs/ic-208h-service-manual.pdf Status update: I've confirmed that both power protection diodes are OK in the unit base. The 5V regulator in the ...
by VK7ZA
Wed Oct 14, 2015 9:13 am
Forum: Transceivers, Transmitters & Receivers
Topic: IC-208h won't power on anymore
Replies: 15
Views: 1266

IC-208h won't power on anymore

It's my fault, I fiddled. Radio was working fine, then I attempted to DIY a remote head cable as they can't be purchased any more. Long story short, after trying my funky cable, the radio won't power on any more, so assume some pins shorted one of the other lines perhaps. Checking the schematic, the...
by VK7ZA
Tue Oct 13, 2015 7:34 am
Forum: Towers, Masts & Transmission Lines
Topic: Securing coax to colorbond roof.
Replies: 17
Views: 1393

Re: Securing coax to colorbond roof.

As an alternative to conduit, this stuff... http://www.marley.co.nz/products/cable-management/trunking/ is available in various sizes. Yes Mark, This is what I'm using for runs along walls. I'm not going to bother enclosing the coax on the roof at the moment. Thanks for all the suggestions regardin...
by VK7ZA
Mon Oct 12, 2015 8:12 pm
Forum: Regulatory, Licencing & Exams
Topic: Exam / Licence Price & Young People ..
Replies: 160
Views: 10110

Re: Exam / Licence Price & Young People ..

You need to put down whatever it is you've been smoking :D . I don't think any of us were thinking of five year old when referring to youth. Having said that, if a five year old is smart enough to pass the test, I'd be happy to chat to her. The bigger question though, is would she want too talk to y...
by VK7ZA
Mon Oct 12, 2015 3:24 pm
Forum: Towers, Masts & Transmission Lines
Topic: Securing coax to colorbond roof.
Replies: 17
Views: 1393

Re: Securing coax to colorbond roof.

VK6ZFG wrote:It keeps the sun of the cable and they last longer.
What is this "sun" you speak of? :eh: