Search found 156 matches

by VK4WTN
Sun Jan 06, 2019 2:03 pm
Forum: 50 MHz
Topic: What has FT8 done for 6m ?
Replies: 28
Views: 2374

Re: What has FT8 done for 6m ?

After todays opening from the southern states into JA and BV anyone can not ignore the benefits we have gained using digital modes such as FT8 and JT65 on 6 meters. Could anyone a few years back ever dreamed that we could work the USA, South America, Europe and asia at the bottom of the sunspot cycl...
by VK4WTN
Sun Dec 23, 2018 6:15 am
Forum: 50 MHz
Topic: FT8 6m DX
Replies: 37
Views: 5206

Re: FT8 6m DX

FT8/ JT65 has been a revelation on 6M. It is a tool in the box that can be used to provide all sorts of DX paths on an otherwise (DX wise) dead 6M band at the bottom of the sunspot cycle. Who would have ever dreamed of working Europe and South America at the bottom of the sunspot cycle. I think that...
by VK4WTN
Fri Nov 23, 2018 11:11 am
Forum: General Discussion
Topic: FT8 version 2 is coming
Replies: 38
Views: 3271

Re: FT8 version 2 is coming

I bet there will be some confusion on the VK-SA path this summer. JT65, FT8 and FT8 version 2.
by VK4WTN
Sat Nov 17, 2018 6:38 am
Forum: EMC, Interference
Topic: low noise solar inverters
Replies: 14
Views: 1994

Re: low noise solar inverters

Just an update, fitted a second hand ABB (Aurora) inverter yesterday and there is no detectable noise
Wayne
by VK4WTN
Tue Nov 13, 2018 9:30 am
Forum: EMC, Interference
Topic: low noise solar inverters
Replies: 14
Views: 1994

Re: low noise solar inverters

for sure Peter, it should be installed this week.The Aurora that I had (the ABB is the same unit) produced zero noise and is mounted 2M from the radios.
by VK4WTN
Tue Nov 13, 2018 7:20 am
Forum: EMC, Interference
Topic: low noise solar inverters
Replies: 14
Views: 1994

Re: low noise solar inverters

Ive managed to source an ABB inverter ( same as the Aurora) so all should be good
Wayne
by VK4WTN
Sun Nov 11, 2018 6:42 am
Forum: EMC, Interference
Topic: low noise solar inverters
Replies: 14
Views: 1994

Re: low noise solar inverters

thanks Mark, its always a bit of a worry re rfi, you don't know until the units installed what you are going to see.I may still try and pick up an old stock Aurora if there is any still available. cheers Wayne
by VK4WTN
Fri Nov 09, 2018 9:51 am
Forum: EMC, Interference
Topic: low noise solar inverters
Replies: 14
Views: 1994

Re: low noise solar inverters

thanks for the replies Jayson and Peter, sounds like the Frontius might be the way to go. The unit is mounted in the house not that far from the radios so should the fan noise be a big issue Peter?
cheers Wayne
by VK4WTN
Fri Nov 09, 2018 8:29 am
Forum: EMC, Interference
Topic: low noise solar inverters
Replies: 14
Views: 1994

low noise solar inverters

hi all, My Aurora solar inverter has failed and needs replacing. The Aurora creates no noise issues but its hard to source another one. Any ideas on which of the modern inverters are the most rfi friendly. Would hate to replace the aurora with another brand and find I have RF noise problems. Wayne V...
by VK4WTN
Mon Sep 10, 2018 7:48 am
Forum: 50 MHz
Topic: FT8 6m DX
Replies: 37
Views: 5206

Re: FT8 6m DX

hi Andrew, nice to see the forum back. Paul VK4MA had several completed qsos this winter and Brian VK5BC worked some.
Exciting times ahead on 6M
cheers Wayne
by VK4WTN
Thu Aug 25, 2016 4:25 pm
Forum: General Discussion
Topic: Lurking 101
Replies: 8
Views: 1494

Re: Lurking 101

The term lurker almost sounds like some sort of predator. Like most people I like to read various forums and learn heaps of useful information and ideas.If I think I can make a meaningful contribution I will post a comment. I cant see the point of posting waffle for the sake of increasing my posting...
by VK4WTN
Thu Aug 18, 2016 7:36 am
Forum: Propagation & Solar Cycle News
Topic: Solar Cycle 25...how old will u be?
Replies: 39
Views: 7883

Re: Solar Cycle 25...how old will u be?

Got my wheelchair ordered complete with remote control for the 6 meter gear.Complete with computer generated CW (because I wont be able to remember CW by then).
Wayne VK4WTN
by VK4WTN
Sun Jul 31, 2016 5:19 pm
Forum: Regulatory, Licencing & Exams
Topic: Check You License Renewal
Replies: 52
Views: 4035

Re: Check You License Renewal

mine comes up as expired as well, although it was paid by BPAY two weeks ago and they confirmed they had received the payment when i phoned them a week ago.I guess its just a big in their computer system so I would assume we continue normal operations seeing it is a problem at their end.
Wayne VK4WTN
by VK4WTN
Fri Jul 15, 2016 2:24 pm
Forum: EMC, Interference
Topic: Internet dropping out when TXing
Replies: 15
Views: 1460

Re: Internet dropping out when TXing

hi all just a followup. After rerunning phone cables and fitting toroids on just about everything to no effect, I made up a low pass filter that rolls off above 2Mhz. It fits between the modem and phone line.Problem solved, no problems anymore with internet drop outs.
Wayne VK4WTN
by VK4WTN
Wed Jun 22, 2016 9:13 am
Forum: Digital Modes Miscellaneous
Topic: HELL on Tuesday!
Replies: 89
Views: 6635

Re: HELL on Tuesday!

will be back next Teusday,pity condx were so poor.Hope to work Robert from his home QTH.
cheers Wayne VK4WTN
by VK4WTN
Wed Jun 15, 2016 7:06 am
Forum: Digital Modes Miscellaneous
Topic: HELL on Tuesday!
Replies: 89
Views: 6635

Re: HELL on Tuesday!

good night copied VK3FM, VK2DUX, VK2XTC and VK5RM all good copy
cheers Wayne VK4WTN
by VK4WTN
Wed Jun 08, 2016 2:52 pm
Forum: LF, MF, HF
Topic: 17 Meter Dipole Help Needed Please
Replies: 5
Views: 1047

Re: 17 Meter Dipole Help Needed Please

hi Mike, there are lots of variables for calculating dipole length. 18.1Mhz by the formulae should be about 3.937M per side.But the formulas are normally for bare copper wire.Insulated wire and aluminium can be slightly different lengths due to velocity factor.Also if I remember correctly the feed i...
by VK4WTN
Wed Jun 08, 2016 2:06 pm
Forum: Digital Modes Miscellaneous
Topic: HELL on Tuesday!
Replies: 89
Views: 6635

Re: HELL on Tuesday!

Great fun last night worked Phil VK5RM and had copies on VK2DUX, VK3FM and VK6OX. Really interesting mode.
regards Wayne VK4WTN
by VK4WTN
Tue May 10, 2016 5:41 pm
Forum: EMC, Interference
Topic: Internet dropping out when TXing
Replies: 15
Views: 1460

Re: Internet dropping out when TXing

I found several good designs for low pass filters on the net so I will make one and put it on the phone line where it goes into the modem. 40M is a real problem it is even interfering with foxtel which is a surprise. Have to go back to 6M no RFI there.
by VK4WTN
Fri May 06, 2016 7:11 am
Forum: EMC, Interference
Topic: Internet dropping out when TXing
Replies: 15
Views: 1460

Re: Internet dropping out when TXing

Thanks guys, I have bookmarked the K-Y filter. I may look at a different modem or moving the modem to the other side of the house away from the antenna
Any other ideas will be appreciated
regards Wayne VK4WTN