Search found 186 matches

by VK6ZFG
Tue Feb 05, 2019 9:07 am
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Solar powered shacks
Replies: 24
Views: 9592

Re: Solar powered shacks

I use the Green cap on 12V solar regulators (for which the reply was intended). On my SolarRiver Grid Tie Inverter I fitted red ones (mains and panel sides) as these are 630V rated along with a toroid with turns as the device did produce some noise. Also the type of ferrite used makes a big differen...
by VK6ZFG
Mon Feb 04, 2019 3:21 pm
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Solar powered shacks
Replies: 24
Views: 9592

Re: Solar powered shacks

Toroids will not do much unless multiple turns are used. What you need is bypass capacitors on all inputs and outputs and likely locations where interference may be produced. I find greencaps of 0.001 uF and 0.1 uF usually work quite well for HF and VHF. The noise will also depend on the loading con...
by VK6ZFG
Mon Feb 04, 2019 3:16 pm
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Solar powered shacks
Replies: 24
Views: 9592

Re: Solar powered shacks

Toroids will not do much unless you use multiple turns.

What you need is a number of bypass capacitors fitted directly onto the regulator PCB. I find green caps of 0.001 uF and 0.1 uF on all inputs and outputs usually do the job.

73s

Igor
VK6ZG
by VK6ZFG
Tue Jan 15, 2019 9:30 am
Forum: Beacons
Topic: VK6RPH Beacon
Replies: 3
Views: 3983

VK6RPH Beacon

Hi All A new GPS locked VHF Group VK6RPH Beacon built by VK6RK is now operating on 6M, 2M, 70cm and 23cm under test At Wireless Hill. It uses the ZL2BKC multi mode controller with a separate PA for each band and is currently connected to a modified CB Ringo vertical on 6M and a triband vertical for ...
by VK6ZFG
Tue Jan 08, 2019 9:33 am
Forum: Transceivers, Transmitters & Receivers
Topic: TS2000 2m PA device Type
Replies: 5
Views: 4618

Re: TS2000 2m PA device Type

Hi Kevin

According to technical service supplement dated 2002-2, from what I can see the TS 2000 with a serial no 30600203 or greater use PA Board X45-360-XX(A/2) with 2SC1972 transistors for 2M.
by VK6ZFG
Mon Oct 01, 2018 12:25 pm
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Solar powered shacks
Replies: 24
Views: 9592

Re: Solar powered shacks

Hi I have been using solar systems for some time. The current solar system consists of a bank of solar panels which is connected to two battery banks separated by some distance but interconnected by heavy cables. The main bank being in the shed and a smaller sized one in the shack. I use two identic...
by VK6ZFG
Mon Sep 24, 2018 11:34 am
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Don't trust all SMA - SO239 adapters
Replies: 8
Views: 5334

Re: Don't trust all SMA - SO239 adapters

I found a similar problem with brand new back to back N Type M to M connector of a rather reputable brand commonly used in commercial systems. This was on the mating side and not on the termination side of the connector. There was an almost invisible hair thick piece of metal which would intermitten...
by VK6ZFG
Sun Aug 21, 2016 9:24 am
Forum: Regulatory, Licencing & Exams
Topic: VK Maritime Mobile
Replies: 19
Views: 8235

Re: VK Maritime Mobile

If you want to operate maritime you need the ship owners/operator permission, the captains permission and your gear is likely to be also needed to checked by one of the ships officers. Your will also need an amateur licence operate under that is valid for the country the ship is registered under. Am...
by VK6ZFG
Wed Jul 13, 2016 9:21 pm
Forum: 144 & 432 MHz
Topic: QYT KT-8900R
Replies: 5
Views: 8276

Re: QYT KT-8900R

Hi Ron I presume you have a programming lead. To make it work you most likely will need to use different USB driver to that of the later Windows version. Download the appropriate programming software for the radio. This defaults to Chinese but English can be selected from one of the options along th...
by VK6ZFG
Sun Jun 05, 2016 10:01 am
Forum: 144 & 432 MHz
Topic: Ebay 2M radio
Replies: 9
Views: 5637

Re: Ebay 2M radio

Hi I have a QTY 8900R. This is the upgraded version where they have added a fan to cool the unit. I would avoid the older QTY 8900 with no fan. It is a very small radio so heat sinking is minimal. The QTY 8900R has a speaker socket as well as a separate programming socket but the QTY 8900 only has a...
by VK6ZFG
Thu May 19, 2016 9:46 pm
Forum: Towers, Masts & Transmission Lines
Topic: Securing coax to colorbond roof.
Replies: 17
Views: 5894

Re: Securing coax to colorbond roof.

If you go down the silicon adhesive path use the gutter sealant type as it is not corrosive to metal like the more common silicon adhesive.
by VK6ZFG
Thu May 19, 2016 1:50 pm
Forum: EMC, Interference
Topic: Quarter wave stub bandpass plot
Replies: 12
Views: 5928

Re: Quarter wave stub bandpass plot

Hi Sweep of a 415 mm length (including BNC) of RG6 plugged into a BNC Tee inserted into a short 50 ohm length of coax between 50 ohm ports on a Rigol tracking generator. 146 MHZ STUB SWEEP 2.jpg On a 75 ohm feeder system the attenuation may work out to be a bit higher. Hope it answers the original q...
by VK6ZFG
Sat May 07, 2016 9:01 am
Forum: EMC, Interference
Topic: Internet dropping out when TXing
Replies: 15
Views: 6202

Re: Internet dropping out when TXing

Don't have the internet problem but if I go on 80M, the TV turns on. Have not worked out which band the use to turn it off with!
by VK6ZFG
Wed Apr 27, 2016 10:42 am
Forum: Regulatory, Licencing & Exams
Topic: The future for amateur radio in VK
Replies: 66
Views: 24225

Re: The future for amateur radio in VK

One needs to put things into perspective. Yes, the licence fee cost is an issue but the equipment cost far out weighs this!
by VK6ZFG
Fri Apr 22, 2016 11:57 am
Forum: Regulatory, Licencing & Exams
Topic: The future for amateur radio in VK
Replies: 66
Views: 24225

Re: The future for amateur radio in VK

Just for information sake the LCD power conditions are: 16 Transmitter output power (1) Subject to sections 15 and 15C, the licensee must not operate an amateur advanced station, using a transmitter output power of more than 400 watts pX, if the emission mode of the station includes: (a) C3F; or (b)...
by VK6ZFG
Tue Apr 05, 2016 3:00 pm
Forum: Regulatory, Licencing & Exams
Topic: 160M-70cm Band-plan 1-pg wallchart
Replies: 17
Views: 6964

Re: 160M-70cm Band-plan 1-pg wallchart

Good one Danny Makes life somewhat easier. however it looks to me like the WIA Plans used shows what the WIA have planned for the future and these do not reflect what is currently present (eg: current 70cm repeater inputs of which some are in the LIPD area). Not sure if a similar situation also appl...
by VK6ZFG
Mon Feb 22, 2016 2:56 pm
Forum: 1296, Microwaves and Opto
Topic: Normal yagi vs loop yagi on 23cm
Replies: 8
Views: 2000

Re: Normal yagi vs loop yagi on 23cm

Hi Roger What would be interesting to know what the S2 to S4 difference in signal level actually means in real dBs. S meter readings unfortunately are usually inconsistent in dB calibration through the meter scale. They also vary between different radios and brands. They also usually vary greatly be...
by VK6ZFG
Sun Jan 24, 2016 4:48 pm
Forum: LF, MF, HF
Topic: Station Master repair
Replies: 20
Views: 10915

Re: Station Master repair

I have successfully made use of plastic/nylon cable glands to provide support and insulation on antennas. They nowdays come in all sizes and are readily available and provide a convineint way of getting the job done. For the staion master one could be used for the top support and another at the bott...
by VK6ZFG
Sat Jan 23, 2016 3:25 pm
Forum: Transceivers, Transmitters & Receivers
Topic: Uniden Scanner - are they all deaf ?
Replies: 10
Views: 5070

Re: Uniden Scanner - are they all deaf ?

Test the Scanner with a signal generator if you can. This will tell you how the Scanner compares with the published specifications.

If ththe Scanner is within the ball park of the published specifications then overloading will be the problem when it is connected to an antenna at your QTH.
by VK6ZFG
Fri Jan 22, 2016 2:14 pm
Forum: Towers, Masts & Transmission Lines
Topic: NBS Tilt Over Mast Experiences
Replies: 54
Views: 18473

Re: NBS Tilt Over Mast Experiences

To be considered as a Carrier you will need to have a Carrier Licence. If you have a Carrier Licence I believe that there may be a number conditions attached which may make holding a Carrier Licence not worth while (unless you actually are in the business of being a Carrier).