Search found 101 matches

by ZL2BKC
Tue Apr 02, 2019 7:06 pm
Forum: 1296, Microwaves and Opto
Topic: New from Analog the ADF4371 62Mhz - 32Ghz Synthesizer
Replies: 8
Views: 3677

Re: New from Analog the ADF4371 62Mhz - 32Ghz Synthesizer

All good points ! I dont know the CMA38400 - can you point me at some info ? A quick search on Ebay turned up nothing but colourful phone cases :wtf: and googling turned up some references in issue 207 of the French Microwave Mag Hyper but no hard data or where one might acquire such a device. than...
by ZL2BKC
Mon Apr 01, 2019 5:35 pm
Forum: 1296, Microwaves and Opto
Topic: New from Analog the ADF4371 62Mhz - 32Ghz Synthesizer
Replies: 8
Views: 3677

Re: New from Analog the ADF4371 62Mhz - 32Ghz Synthesizer

Its dam expensive though Tim. Looks like somewhere around $390+NZ :crazy: Roger Don't forget the output level is quite low so you need a wideband power amp as well, plus don't forget FR4 PCB will present significant challenges at that frequency. The BOM starts to look expensive :o This chip may be ...
by ZL2BKC
Fri Jul 29, 2016 7:38 pm
Forum: 1296, Microwaves and Opto
Topic: ZL2WHO/B 23cm Panel Antenna
Replies: 7
Views: 1461

Re: ZL2WHO/B 23cm Panel Antenna

Nice work Looks good guys. Are you going to run the same ant. down this way or just more power. I haven't seen the beacon on JT4 for a while now but then again Im not listening as much as I was. You need to get WSPR running on it :wink: :wink: Hi Roger The master plan for the other 2 antennas, once...
by ZL2BKC
Fri Jul 29, 2016 11:34 am
Forum: General Discussion
Topic: 2016 Microwavers Award
Replies: 3
Views: 3599

Re: 2016 Microwavers Award

I cannot think of anyone more deserving. Well done Doug :clap:
by ZL2BKC
Thu Jul 28, 2016 8:18 pm
Forum: 1296, Microwaves and Opto
Topic: ZL2WHO/B 23cm Panel Antenna
Replies: 7
Views: 1461

Re: 23cm Panel Antenna

Panel #1 Dual panel Antenna
DSC_3620.JPG
Dual Panel - Front View
DSC_3629.JPG
Rear View
Rigol DSA815TG
DSC_3636.JPG
Rigol
by ZL2BKC
Thu Jul 28, 2016 8:12 pm
Forum: 1296, Microwaves and Opto
Topic: ZL2WHO/B 23cm Panel Antenna
Replies: 7
Views: 1461

Re: 23cm Panel Antenna

More Pictures:

Reference Antenna
DSC_3626.JPG
Reference Antenna
DSC_3638.JPG
Ref Antenna Location on camera tripod
Range:
DSC_3624.JPG
Range

Mark Adjusting the height:
DSC_3634.JPG
Mark Adjusting Height
by ZL2BKC
Thu Jul 28, 2016 8:03 pm
Forum: 1296, Microwaves and Opto
Topic: ZL2WHO/B 23cm Panel Antenna
Replies: 7
Views: 1461

ZL2WHO/B 23cm Panel Antenna

Mark ZL2WHO has been busy building a more 23cm panel antennas for the Waipuna Ridge beacon site (ZL2WHO/b) specifically to point towards VK-Land. Based on a nice opening in October 2015 we know propagation can happen, so it just made sense to fire some RF in the VK2/VK4 direction. The original desig...
by ZL2BKC
Wed Jun 15, 2016 8:28 pm
Forum: Ancillary, Test Equipment, Components & Parts
Topic: SMPS On Steroids
Replies: 7
Views: 4219

Re: SMPS On Steroids

Here is a nice project idea if you are looking for inspiration:

http://hackaday.com/2016/01/26/its-a-bi ... ore-187639

73,
Wayne
by ZL2BKC
Sat May 28, 2016 7:52 am
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Hp Z3816a GPSDO
Replies: 5
Views: 3478

Re: Hp Z3816a GPSDO

Hi Kevin, The best thing to do is connect a RS232 terminal to the unit and query what is going on. I believe the command is: :system:diag:log:read:all? and :system:status? Some of the HP units (not sure which one, there are many GPSDO models) have issues with the GPS date. The underlying issue is th...
by ZL2BKC
Thu Apr 28, 2016 2:52 pm
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Cleaning plastic battery holders?
Replies: 5
Views: 3415

Re: cleaning plastic battery holders

Wayne It is probably more than the cost of the radio but I highly recommend investing in an ultrasonic cleaner. I've had one for a few years and it has payed for itself several times over. There are plenty to choose from in Aliexpress - I recommend an all stainless model. For a cleaning agent I norm...
by ZL2BKC
Mon Apr 25, 2016 6:36 pm
Forum: General Discussion
Topic: Standards for DC Connectors
Replies: 6
Views: 1610

Re: Standards for DC Connectors

Hi Simon, I just checked mine, and it turns out I use the same stacking configuration, but both my 12V and 24V ones are reverse polarity to your standard }:[ . Murphy's Law in action. So, we are not allowed to operate at the same field-day site - we can only compete against each other :lol: image1.J...
by ZL2BKC
Tue Apr 12, 2016 11:27 am
Forum: Towers, Masts & Transmission Lines
Topic: Centre pins for type N connectors?
Replies: 1
Views: 3010

Re: Centre pins for type N connecters

Does anyone know where you can buy replacement centre pins for type N connectors? I have some that have no pins or have crimped pins that cannot be re-used. 73 Wayne VK4WDM Try rfsupplier.com (details on contact page). Some time ago they gave me a price for crimp rings and extra dust caps for N con...
by ZL2BKC
Sat Mar 12, 2016 11:36 am
Forum: Ancillary, Test Equipment, Components & Parts
Topic: Trimble 10MHz 65256
Replies: 4
Views: 3713

Re: Trimble 10MHz 65256

Dave, Great work on the repair job. As you have discovered the Trimble OCXO is a nice unit - the only downside is the current draw is quite high (1.9A) at startup which is very high compared to other surplus models from China. It does settle down to ~0.25A after a few minutes so it wont tax the batt...
by ZL2BKC
Sat Feb 27, 2016 5:29 am
Forum: Arduino, Picaxe, Raspberry Pi, and variants
Topic: Pi Software and Hardware issues, Linux
Replies: 7
Views: 4158

Re: Pi Software and Hardware issues, Linux

Successful operation of USB requires a good reliable power source. Often there is insufficient power budget left for USB peripheral operation and wall adapter ratings are questionable. I recommend you try a good power adapter capable of 2A to see if that solves your issue. The apple iPad adapter is ...
by ZL2BKC
Tue Feb 02, 2016 1:30 pm
Forum: Silent Keys
Topic: SK ZL2ADU
Replies: 21
Views: 7812

Re: SK ZL2ADU

This is very sad indeed.

He was undoubtedly the most active ZL'er on 2m SSB and EME and he will surely be missed.

RIP Harry.

--
Wayne ZL2BKC
by ZL2BKC
Mon Jan 18, 2016 12:35 pm
Forum: EMC, Interference
Topic: Green Interference!!!
Replies: 26
Views: 8135

Re: Green Interference!!!

entire house uses Philips LED lamps and there is no trace of interference at all. cheers all The Phillps ones are good, at least the ones that I have tested. Several months ago I setup a LISN and measured a number of GU10 lights. Screen shots were taken and if anyone is interested Im happy to post ...
by ZL2BKC
Fri Dec 18, 2015 7:35 pm
Forum: 1296, Microwaves and Opto
Topic: Minikits 23cms RA18H1213G amp
Replies: 8
Views: 1438

Re: Minikits 23cms RA18H1213G amp

Hi, the standing current is a lot higher that I had expected, was hopeful of a power efficient P.A for the 23cm beacon I am building but with 4amps all the of the key up time, is quite a current draw for idle over 24Hours ( I want to have the beacon run as a low duty cycle system if possible ) has ...
by ZL2BKC
Fri Dec 11, 2015 3:36 pm
Forum: 1296, Microwaves and Opto
Topic: Minikits 23cms RA18H1213G amp
Replies: 8
Views: 1438

Re: Minikits 23cms RA18H1213G amp

Thanks for treading this I have just completed assembly of a Minikits 23cms amplifier using the Mitsibushi RA18H1213G module which is supposed to produce about 20 watts PEP on 1296MHz Kevin, This is perfectly acceptable for the RA18H1213 power block. I have built several before and generally I like...
by ZL2BKC
Tue Oct 20, 2015 2:00 pm
Forum: 1296, Microwaves and Opto
Topic: Back on 23 cm
Replies: 25
Views: 3290

Re: Back on 23 cm

Also interested to know from Len VK4ALA some info on the 1296 feed in the gridpack shown in his earlier posting above I use a similar gridpack on 2.4 with its original WiFi (?dipole) feed with good results Kevin VK4UH I have the same gridpack antenna and would also be interested in more info on how...
by ZL2BKC
Mon Oct 12, 2015 7:38 pm
Forum: Towers, Masts & Transmission Lines
Topic: Securing coax to colorbond roof.
Replies: 17
Views: 4802

Re: Securing coax to colorbond roof.

Not quite the correct orientation, but I got these from the sale bin at Bunnings earlier in the year (after Christmas I guess...) Should be ok for a horizontal run if you push them under the tile. Not sure about a vertical run. ImageUploadedByTapatalk1444642571.618974.jpg Given the size of the Xmas ...