Search found 118 matches

by VK5EI
Sun Sep 30, 2018 8:10 pm
Forum: EMC, Interference
Topic: 40M radar interference
Replies: 9
Views: 783

Re: 40M radar interference

Yes Wal,

It has been hammering us for the last week

}:[ }:[
by VK5EI
Sat Jul 30, 2016 10:05 pm
Forum: Satellites & Balloons
Topic: 70cm 1200 AFSK Tlm
Replies: 3
Views: 441

Re: 70cm 1200 AFSK Tlm

Hi John,

Sprout and Cubebug-1 maybe worth a look at.

Its been a while since I checked but this site indicates they are still active http://www.asahi-net.or.jp/~ei7m-wkt/satslisj.htm

I will have a listen on the next suitable pass.

73
Joe
by VK5EI
Thu Apr 07, 2016 9:40 pm
Forum: Satellites & Balloons
Topic: PS-63 PICO balloon HF JT9 WSPR
Replies: 9
Views: 717

Re: PS-63 PICO balloon HF JT9 WSPR

Wow a nice long distance spot by JQ2WDO :clap: :clap:
by VK5EI
Sun Apr 03, 2016 9:48 pm
Forum: Satellites & Balloons
Topic: PS-63 PICO balloon HF JT9 WSPR
Replies: 9
Views: 717

Re: PS-63 PICO balloon HF JT9 WSPR

Thanks for another Pico balloon Andy :clap: I enjoy observing the telemetry data received from these flights. A couple of graphs showing profiles on some telemetry stats. Battery voltage becomes very critical with temperature as we all know. There is missing data data between 0100 and 0500 utc maybe...
by VK5EI
Sun Mar 27, 2016 8:59 pm
Forum: General Discussion
Topic: Cut a smooth round hole in front panel
Replies: 17
Views: 1657

Re: cut a smooth round hole in front panel

Peter I have successfully used hole saws with a drill press. If you can remove the panel and clamp it carefully face down to a clean block of wood. When drilling apply pressure very slowly and apply cutting oil and it should work ok. I have used this method for sheet aluminium many times. Make sure ...
by VK5EI
Tue Feb 09, 2016 6:53 pm
Forum: Satellites & Balloons
Topic: PS-58 PICO balloon HF JT9 WSPR
Replies: 10
Views: 804

Re: PS-58 PICO balloon HF JT9 WSPR

Great flight Andy. More interesting when it crosses over the equator and stirs up our usa and europe friends :D Yes John antennas are back in action, we had some bad bush fires which sent our feathered friends our way to munch on our local pine trees Bob do I sense a drifter happening ???? :J Thanks...
by VK5EI
Sun Feb 07, 2016 9:08 pm
Forum: Digital Modes Miscellaneous
Topic: Digimode on 7.079?
Replies: 12
Views: 1049

Re: Digimode on 7.079?

Hard to tell, my guess is most of them is captured using sharp sdr however there are now lots programs available :crazy:
by VK5EI
Sun Feb 07, 2016 5:04 pm
Forum: Digital Modes Miscellaneous
Topic: Digimode on 7.079?
Replies: 12
Views: 1049

Re: Digimode on 7.079?

A useful guide to help identify signals

http://www.sigidwiki.com/wiki/Database

73
by VK5EI
Tue Feb 02, 2016 4:53 pm
Forum: Satellites & Balloons
Topic: PS-60 PICO balloon APRS Olivia
Replies: 17
Views: 1109

Re: PS-60 PICO balloon APRS Olivia

The flight prediction model is very close, Im getting dizzy looking at it :crazy:
by VK5EI
Tue Feb 02, 2016 4:29 pm
Forum: Digital Modes Miscellaneous
Topic: Digimode on 7.079?
Replies: 12
Views: 1049

Re: Digimode on 7.079?

It may also be someone experimenting with the FSQ mode, it does sound a bit like JT65 :D

73
by VK5EI
Wed Jan 20, 2016 9:27 pm
Forum: Satellites & Balloons
Topic: PS-58 PICO balloon HF JT9 WSPR
Replies: 10
Views: 804

Re: PS-58 PICO balloon HF JT9 WSPR

Hi John, great tracking from your receiving antennas :clap:

PS-58 now into the Northern Hemisphere well done Andy

My HF antennas are out of action, bad local cocky attack yesterday on the feed lines :thumbdown:

73
by VK5EI
Fri Jan 15, 2016 4:02 pm
Forum: PC/Mac Hardware
Topic: Tigertronics SignaLink USB
Replies: 19
Views: 3720

Re: Tigertronics SignaLink USB

An interesting article by Owen.

http://owenduffy.net/blog/?p=2501

73
by VK5EI
Tue Jan 12, 2016 3:36 pm
Forum: Satellites & Balloons
Topic: PS-57 PICO balloon HF JT9 WSPR
Replies: 18
Views: 1444

Re: PS-57 PICO balloon HF JT9 WSPR

Great flight Andy well done :clap:

A summary of flight details (data from habitat payload telemetry)

Approx flight time: 686 hrs
Average Speed: 59.4 km/hr
Maximum speed: 136.8 km/hr

A bizarre approximate final landing area for PS-57 was grid reference MH80 :shock:

Thanks again
Joe
by VK5EI
Sat Jan 02, 2016 8:10 pm
Forum: Satellites & Balloons
Topic: PS-56 HF pico balloon tracking challenge - CW only, no GPS
Replies: 31
Views: 1748

Re: PS-56 HF pico balloon tracking challenge - CW only, no G

So far I haven't seen any traces from PS-56 tonight, anyone else ?
by VK5EI
Wed Dec 30, 2015 5:16 pm
Forum: 50 MHz
Topic: Flat strip driven elements on 6m.
Replies: 17
Views: 1536

Re: Flat strip driven elements on 6m.

I made this simple cheap bending jig from parts in the back yard shed. You need to find the correct pulley size to ensure correct spacing. I practiced on several off cuts and you must allow for the 'spring" effect. More details from this website : http://www.ifwtech.co.uk/g3sek/diy-yagi/dipoles.htm 73
by VK5EI
Wed Dec 30, 2015 4:49 am
Forum: Satellites & Balloons
Topic: PS-56 HF pico balloon tracking challenge - CW only, no GPS
Replies: 31
Views: 1748

Re: PS-56 HF pico balloon tracking challenge - CW only, no G

My ears still a bit sleepy I got a battery voltage of 3486 at 18:47 UTC signal audible.

73
by VK5EI
Tue Dec 29, 2015 4:57 am
Forum: Satellites & Balloons
Topic: PS-56 HF pico balloon tracking challenge - CW only, no GPS
Replies: 31
Views: 1748

Re: PS-56 HF pico balloon tracking challenge - CW only, no G

18:52 UTC signal audible with headphones.

73
by VK5EI
Mon Dec 28, 2015 6:38 pm
Forum: Satellites & Balloons
Topic: PS-56 HF pico balloon tracking challenge - CW only, no GPS
Replies: 31
Views: 1748

Re: PS-56 HF pico balloon tracking challenge - CW only, no G

Traces seen today 08:17, 08:25 and 08:33 UTC

To weak to read................. I need Bob's ears :D
by VK5EI
Mon Dec 28, 2015 4:45 pm
Forum: Satellites & Balloons
Topic: Satellites - Some newbie questions
Replies: 10
Views: 697

Re: Satellites - Some newbie questions

Another method used is to mount both 2m and 70cm on the same boom. (as per pic). 30 degree elevation will be plenty for your experiment. To reduce fading on signals caused by polarization change you could also mount the antennas with a 45 degree slant, this method is also popular. Thanks for your co...
by VK5EI
Sun Dec 27, 2015 8:28 pm
Forum: Satellites & Balloons
Topic: Satellites - Some newbie questions
Replies: 10
Views: 697

Re: Some newbie questions

Hi Wayne, FO-29 or Fuji Oscar 29 (Jas-2) is a great SSB bird to work and well done for your contact with Rob. 1. How accurate does the elevation have to be? It will be difficult to continuously change it throughout the pass using my rope method. Would setting it at the average elevation for the pass...