Search found 105 matches

by VK5APN
Thu Jan 07, 2016 11:53 am
Forum: LF, MF, HF
Topic: Dipole Bleeder Resistor
Replies: 14
Views: 2181

Re: Dipole Bleeder Resistor

Or build one of these for a DC path to ground. Either the 1:1 or the 4:1

Cheers

Wayne
by VK5APN
Wed Dec 30, 2015 3:20 pm
Forum: Transceivers, Transmitters & Receivers
Topic: IC706 MK2 G Fault
Replies: 12
Views: 1679

Re: IC706 MK2 G Fault

Hi Had some time today to check out my IC706 MK2. Removed the PLL board (on the base of the radio and towards the front of the unit), there is 6 screws to remove. 5 for the PCB itself and another screw holding down a TO220 cased device near the front of the radio. Plus the clip on the LHS as previou...
by VK5APN
Wed Dec 30, 2015 1:22 pm
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Yagi Insulators - Suggestions ?
Replies: 33
Views: 3209

Re: Yagi Insulators - Suggestions ?

Built a number of YU7EF yagis for 2m. All 6 of them I have used glue lined heatshrink. Obviously adjusted element length to reflect the mounting method. Details for the dimension difference is found on Pops website. How I constructed the yagis is found here http://members.iinet.net.au/~pearsons@aapt...
by VK5APN
Fri Dec 11, 2015 9:53 am
Forum: 1296, Microwaves and Opto
Topic: ESE and EIE
Replies: 2
Views: 571

ESE and EIE

Once you are done with EME (Moon Bounce) well lets try ESE (Satellite bounce) or EIE (ISS Bounce)

Not on 2M but on 23cm.

http://www.dj5ar.de/

Well done guys, great achievement

Regards

Wayne VK5APN
by VK5APN
Fri Sep 11, 2015 4:30 pm
Forum: Meteor Scatter (MS)
Topic: 144MHz Meteor Scatter from PF86 and PF96
Replies: 2
Views: 489

144MHz Meteor Scatter from PF86 and PF96

Hi Once again I am travelling for work, this time to Pt Pirie. The township falls across the PF86 and PF96 border. Handy that :thumbup: I MAY have some time to try Meteor scatter using my portable system, before I need to get ready for work. I will be QRV on the 28th and 29th Sept (utc dates). That ...
by VK5APN
Fri Jul 17, 2015 10:22 am
Forum: General Discussion
Topic: New Horizons communications system overview
Replies: 4
Views: 456

Re: New Horizons communications system overview

All A lot of interesting info out there. http://www.arrl.org/news/new-horizons-phones-home To know which ground station is looking at what space craft.... Last night Canberra 43 was tracking the New Horizons, at time of posting this, it is now Madrid 55 https://eyes.nasa.gov/dsn/dsn.html Above link ...
by VK5APN
Tue Jul 14, 2015 2:05 pm
Forum: Satellites & Balloons
Topic: New Horizons
Replies: 4
Views: 689

Re: New Horizons

Some more info for those interested

Regards

Wayne
by VK5APN
Fri Jun 12, 2015 7:03 pm
Forum: Towers, Masts & Transmission Lines
Topic: Cheap source of fibreglass for non-conductive cross booms
Replies: 7
Views: 1442

Re: Cheap source of fibreglass for non-conductive cross boom

Similar experiences with Excel composites.

Cheap, designed to your dimensions, wall thickness.....

They actually made a mandrel for my job (tapered tubing)

Delivery included came out very reasonable indeed

Wayne VK5APN
by VK5APN
Mon Dec 22, 2014 10:14 pm
Forum: E.M.E.
Topic: Ground gain - effect of antenna height...
Replies: 20
Views: 1545

Re: Ground gain - effect of antenna height...

Steve Google is your friend. An extensive study and documents have been put together by ON4KHG http://www.on4khg.be/EME_Gr_Gain.html in particular http://www.vk3um.com/Ground%20Gain_DUBUS%203-2011_ON4KHG.pdf http://www.on4khg.be/Ground%20Gain%20Measurement%20Procedure%20v2-0.pdf Hope that helps you ...
by VK5APN
Sat Dec 13, 2014 11:23 am
Forum: Ancillary, Test Equipment, Components & Parts
Topic: VF of Semi Rigid RG402 (.141") Cable?
Replies: 11
Views: 924

Re: VF of Semi Rigid RG402 (.141") Cable?

I'm sure Jayson is needing 50 ohm coax for the amp outputs to the coax Wilkinson combiner input. The Wilkinson combiner is made of 75ohm coax and each input is joined to the output of the amp with a half wave 50 ohm coax. Rightly as stated in the pdf found in the thread mentioned, on page 4 http://h...
by VK5APN
Thu Oct 30, 2014 1:49 pm
Forum: 144 & 432 MHz
Topic: Beam stacking
Replies: 8
Views: 1233

Re: Beam stacking

A good article on stacking different band yagi's in close proximity to each other is

http://www.kcvhfgridbandits.com/linked/ ... gyagis.pdf

I know not the Question here (2x70cm yagi's) but may come in handy for some readers here

Cheerio

Wayne
by VK5APN
Wed Oct 29, 2014 5:47 am
Forum: 1296, Microwaves and Opto
Topic: ACMA letter on 2300-2302 MHZ band
Replies: 38
Views: 2374

Re: ACMA letter on 2300-2302 MHZ band

Just passing on some information from Moon-Net Some positive news about the 2.3GHz band from an RSGB briefing: “Whilst the central section of the 2.3GHz band (at 2350-2390MHz) is being removed from the UK amateur licence due to ‘spectrum release’ changes, we have negotiated access to a new segment a...
by VK5APN
Mon Oct 27, 2014 4:41 pm
Forum: 144 & 432 MHz
Topic: Can't find the low SWR point
Replies: 41
Views: 3680

Re: Can't find the low SWR point

Found a pic

Yes your right Bob, 1.2 is very good, just thought I see if I could get it better. Did it affect the performance? Would be hard to pick it.

Wayne
by VK5APN
Mon Oct 27, 2014 4:11 pm
Forum: 144 & 432 MHz
Topic: Can't find the low SWR point
Replies: 41
Views: 3680

Re: Can't find the low SWR point

John I agree with Bob. I recently built a 21 element DK7ZB 70cm yagi for portable work. With 50w have been having some fun off the moon. Including 1 CW QSO. This yagi packs down to no longer 1500mm, ideal for aircraft travel etc. Anyhow, when building it I cut the DE about 2.5mm long per side. It is...
by VK5APN
Fri Oct 24, 2014 7:54 pm
Forum: Satellites & Balloons
Topic: 4M sat launched - Ham radio around the moon
Replies: 3
Views: 335

Re: 4M sat launched - Ham radio around the moon

For VK1JA, a waterfall pic of the 4M signal

Cheers
by VK5APN
Fri Oct 24, 2014 5:11 pm
Forum: E.M.E.
Topic: JT65 Moon orbit probe?
Replies: 39
Views: 2860

Re: JT65 Moon orbit probe?

Was strong this morning before work

best was -4

Cheers
by VK5APN
Sun Sep 21, 2014 11:59 am
Forum: 144 & 432 MHz
Topic: Diplexers where to put at radio or on mast
Replies: 3
Views: 550

Re: Diplexers where to put at radio or on mast

Depends on which way round you are using it, One antenna (dual band) to two radios - then use one low loss cable to unit in shack to both radio's. OR Two antennas to one radio - then use at the antenna in a water proof box, that way can still use only the one low loss cable to the dual band radio. R...
by VK5APN
Sun Sep 14, 2014 9:21 pm
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Dick smith rotator CAT D-5003
Replies: 11
Views: 660

Re: Dick smith rotator CAT D-5003

VK4TI, maybe yours is a STOLLE brand rotator

VK5TX, There maybe adjustment (end of travel adjustment) pots underneath or inside. May just have got out of range, and hence can only turn one way. Just a guess.

Wayne
by VK5APN
Tue Aug 26, 2014 10:24 am
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Kenwood HS-5 Headphones
Replies: 4
Views: 309

Re: Kenwood HS-5 Headphones

Wayne I use the HS-5 for CW. The BEST by far for CW, nice audio roll off to cater for the CW enthusiast. Use mine extensively for weak signals on 2m, which is backed up with a MFJ DSP audio filter. Recently used on SSB and could not hear the CW station, so plugged the HS-5's in and signal popped rig...