Search found 691 matches

by VK5ZD
Sat Jul 06, 2019 12:57 am
Forum: 1296, Microwaves and Opto
Topic: GPSDO Phase noise
Replies: 13
Views: 615

Re: GPSDO Phase noise

More testing... This time I used the five different 10MHz sources as the reference for a 'Kuhne MKU LO 8-13 PLL' oscillator which was configured to output 11,952MHz (x 2 + 144 = 24,048MHz). The five sources are as shown in my previous two posts, namely my home brew GPSDO, a BG7TBL GPSDO, a CIC OCXO,...
by VK5ZD
Fri Jul 05, 2019 11:00 am
Forum: Transceivers, Transmitters & Receivers
Topic: TYT TH-9800
Replies: 12
Views: 2586

Re: TYT TH-9800

VK2XAX wrote:
Thu Jul 04, 2019 2:42 pm
Ian,,, the link to your band limit file doesn't work any more - do you sill have that to share ?
Try here

Hopefully it's still compatible.
by VK5ZD
Fri Jul 05, 2019 1:34 am
Forum: 1296, Microwaves and Opto
Topic: GPSDO Phase noise
Replies: 13
Views: 615

Re: GPSDO Phase noise

An finally, the Efratom Lpro-101 (the previous post wouldn't let me add any more images).
All I can say about this device is that I don't recommend it if you want a clean 10Mhz reference!


LPRO-101 10MHz RUBIDIUM.png
Phase Noise

LPRO-101 Plot.png
50kHz Span

LPRO-101 Plot 500KHz.png
500kHz span
by VK5ZD
Fri Jul 05, 2019 1:30 am
Forum: 1296, Microwaves and Opto
Topic: GPSDO Phase noise
Replies: 13
Views: 615

Re: GPSDO Phase noise

Thought I'd add my 2c worth to this discussion. I have one of the BG7TBL GPSDO units the same as Dave's, but with a different OCXO inside (CTS 970-2178-46). I think they must use whatever surplus OCXO units they can get hold when they build these. By way of comparison, I also have an Isotemp 134-10 ...
by VK5ZD
Fri Jun 14, 2019 1:44 pm
Forum: Transceivers, Transmitters & Receivers
Topic: FT-817 DC Input Socket
Replies: 5
Views: 933

Re: FT-817 DC Input Socket

I just use a small piece of sheet aluminium to hold my FT-817 connectors in place.
IMG_20190614_130819.jpg
by VK5ZD
Mon May 27, 2019 10:30 am
Forum: General Discussion
Topic: Hand keyed Morse clarity
Replies: 8
Views: 228

Re: Hand keyed Morse clarity

What regs are you referring to?
There is no requirement to send or receive morse code for any of the amateur licenses.
by VK5ZD
Thu May 09, 2019 12:45 am
Forum: Miscellaneous
Topic: SSD Failure
Replies: 1
Views: 191

SSD Failure

Just a heads up for anyone that has a SSD in their PC/Laptop, make sure you have a backup. The most common failure mode for 'conventional' hard drive (i.e. those with a spinning discs and read/write heads) is for the disc surface to degrade resulting in file corruption. While this can be annoying yo...
by VK5ZD
Thu May 09, 2019 12:21 am
Forum: 1296, Microwaves and Opto
Topic: 13 cm calling frequency.
Replies: 15
Views: 555

Re: 13 cm calling frequency.

In VK5 we use 2400.15MHz or 2400.2MHz. The band plan is a suggestion, not an actual license condition, and I'm happy follow the band plan where practical. However, as has been noted, there is a lot of WiFi 'crud' around 2403MHz and above. Secondly, the only amateur satellite using 2.4GHz that I'm aw...
by VK5ZD
Wed Apr 03, 2019 7:52 am
Forum: 1296, Microwaves and Opto
Topic: New from Analog the ADF4371 62Mhz - 32Ghz Synthesizer
Replies: 8
Views: 411

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

Apologies I got the model number slightly wrong. Search for CMA382400AUP which is the full model and there are a few on eBay for US$56 at the moment. If you buy one of these from 'total_parts' ebay seller then ignore his comment about it requiring 12v at 4A. That is guaranteed to kill it. :shock: T...
by VK5ZD
Thu Mar 28, 2019 12:00 am
Forum: 1296, Microwaves and Opto
Topic: MAD - Sunday March 24, 2019
Replies: 23
Views: 1202

Re: MAD - Sunday March 24, 2019

Further to my post of the 26th, that's not to say that we didn't try to extend some records, sometimes successfully, sometimes not (no VK4 records were harmed :D :D :D ). However, we did not do this at the expense of making other contacts. Surely one aspect of this hobby is to try pushing the limits...
by VK5ZD
Wed Mar 27, 2019 12:08 am
Forum: 1296, Microwaves and Opto
Topic: MAD - Sunday March 24, 2019
Replies: 23
Views: 1202

Re: MAD - Sunday March 24, 2019

The BVHFG's schedule, if there ever was one, completely revolved around the VK5 road trip. Perhaps the VK5s should have been in town a day earlier to fit in with the planned VK4 Activity Day? If there was a schedule we were not aware of it. We were in town the day before as we had originally assume...
by VK5ZD
Mon Mar 25, 2019 11:37 pm
Forum: 1296, Microwaves and Opto
Topic: MAD - Sunday March 24, 2019
Replies: 23
Views: 1202

Re: MAD - Sunday March 24, 2019

Then throw in the current episode with the VK5's (only here to break records nothing to do with MAD) and it was even more crazy. Don't know why you would think that. If all we wanted to do was have a go at breaking records then we could just as easily do that in SA and not bother to drive 6,000km. ...
by VK5ZD
Fri Mar 22, 2019 7:55 am
Forum: 1296, Microwaves and Opto
Topic: MAD - Sunday March 24, 2019
Replies: 23
Views: 1202

Re: MAD - Sunday March 24, 2019

Who's going where? Myself, Dave (VK5KK) and Tim (VK5ZT) would like to know so we can put ourselves somewhere with a good likelihood of making a contact or three. :lol: :lol: :lol:
by VK5ZD
Fri Mar 22, 2019 7:51 am
Forum: 1296, Microwaves and Opto
Topic: VK5 Microwave Road Trip
Replies: 12
Views: 910

Re: VK5 Microwave Road Trip

Hayden (VK7HH): I can only apologise as things did not go to plan at our end. The night before we decided that I'd go to Mt Buningyong so we could try a long haul 76GHz contact fom Mt Donna Buang. Dave and Tim went to Mt Donna Buang in the morning as planned only to find that the trees had grown sin...
by VK5ZD
Sun Mar 03, 2019 5:46 pm
Forum: 1296, Microwaves and Opto
Topic: VK5 Microwave Road Trip
Replies: 12
Views: 910

VK5 Microwave Road Trip

David (VK5KK), Tim (VK5ZT) and I will be doing a tour which will include visits to VK1, VK2, VK3 and VK4 during the week from the 15th to the 24th of March. The main purpose of the trip is to work as many people as possible on the microwave bands, in particular the mm wave frequencies (i.e. 24GHz an...
by VK5ZD
Thu Feb 28, 2019 8:08 am
Forum: General Discussion
Topic: The WIA and Google Suite
Replies: 5
Views: 1058

Re: The WIA and Google Suite

VK2CSW wrote:If you would like to understand the broader terms under which this is provided please review the link below:
https://gsuite.google.com.au/intl/en_au/...ta-centers
The link doesn't work.
by VK5ZD
Mon Jan 21, 2019 1:47 pm
Forum: 1296, Microwaves and Opto
Topic: Microwave Operator Survey
Replies: 10
Views: 779

Re: Microwave Operator Survey

Just in case they're watching and haven't run an inventory yet I can think of a few missing operators. Most of these have systems 10GHz and below but I know some have at least 24 & 47 VK2DAG, VK2ZRH, VK3HZ, VK3KH, VK3NX, VK3QM, VK3TU, VK3YFL, VK3XPD, VK4UH, VK4MIL, VK4REX Thanks Lou I've added reco...
by VK5ZD
Sun Jan 20, 2019 10:12 am
Forum: 1296, Microwaves and Opto
Topic: Microwave Operator Survey
Replies: 10
Views: 779

Re: Microwave Operator Survey

The list has further updates.
It seems a bit silly to upload the file here each time it changes so the latest version can always be obtained here:
http://www.vk5microwave.net/VKMicrowaveOperators.pdf
by VK5ZD
Sat Jan 19, 2019 4:45 pm
Forum: 1296, Microwaves and Opto
Topic: Microwave Operator Survey
Replies: 10
Views: 779

Re: Microwave Operator Survey

VK3APW wrote:Peter VK3APW..... in addition to what you already have on your list, I also have 24, and 47, operational, with 76GHz needing less than a days work to complete.
I'll record you as having 76GHz. Hope we can work you on it in March. :beer:
by VK5ZD
Sat Jan 19, 2019 12:01 pm
Forum: 1296, Microwaves and Opto
Topic: Microwave Operator Survey
Replies: 10
Views: 779

Re: Microwave Operator Survey

Here is the list so far. Please note that some of the information has been obtained from sources other than the operator (e.g. VHF-UHF Field Day results) although I'm ignoring stations that only have 1296MHz as there are loads of them. If you see something that's incorrect please let me know. If you...