Search found 1194 matches

by VK3ALB
Tue Nov 12, 2019 10:17 am
Forum: 1296, Microwaves and Opto
Topic: Inside the RF HamDesign feed
Replies: 4
Views: 61

Re: Inside the RF HamDesign feed

Hi Chas, I suspect that the 1296 loop was probably distorted as the result of overzealous tightening of the coax connector or perhaps twisting of the coax during dish rotation. Yes, at first view inside my reaction was also yikes but I'm a "feed half full kinda guy" and would like to think that this...
by VK3ALB
Tue Nov 12, 2019 6:14 am
Forum: 1296, Microwaves and Opto
Topic: Inside the RF HamDesign feed
Replies: 4
Views: 61

Inside the RF HamDesign feed

Hi All,

Have you ever wondered what's inside the RF HamDesign feed? After you've seen inside perhaps it might interest you to read a little about the design here.
by VK3ALB
Mon Nov 11, 2019 6:09 pm
Forum: General Discussion
Topic: What's on your Workbench?
Replies: 610
Views: 83609

Re: What's on your Workbench?

MiniKits 1296 transverter kit. These days I have too much work, not enough play (mustn't grumble) but I enjoyed putting this together. Multipliers go together in less than an hour and tune up easily. The transverter board takes a good 4 to 5 hours to assemble. My old man eyes and illuminated magnifi...
by VK3ALB
Sat Sep 21, 2019 10:45 pm
Forum: Transceivers, Transmitters & Receivers
Topic: FT-817 front BNC fault
Replies: 8
Views: 1481

Re: FT-817 front BNC fault

Hi Hayden, Best you dig out your meter and poke around. There's not much in that part of the circuit. Refer to the pic and you can see I've marked the relay common pin. Check the continuity to the centre pin of nearby JP3003 which leads to the front connector. Compare to the rear connector. I reckon...
by VK3ALB
Thu Sep 05, 2019 7:42 pm
Forum: 1296, Microwaves and Opto
Topic: SG Labs 3400MHz Txvtr
Replies: 9
Views: 4755

Re: SG Labs 3400MHz Txvtr

Hayden, I wasn't pointing at anyone in particular. Based on what I know of activity around the country, I'd say there's many out there that have not been converted. Even if the band should be taken away, for the cost of a few hours labor many hams could get a taste of 3.4GHz right now. There is no t...
by VK3ALB
Wed Sep 04, 2019 10:30 pm
Forum: EMC, Interference
Topic: Tesla battery wall v 2.0
Replies: 7
Views: 1732

Re: Tesla battery wall v 2.0

Haven't heard of a battery wall before but here it is.
by VK3ALB
Wed Sep 04, 2019 10:25 pm
Forum: 1296, Microwaves and Opto
Topic: SG Labs 3400MHz Txvtr
Replies: 9
Views: 4755

Re: SG Labs 3400MHz Txvtr

A constant complaint I've heard is "oh but we're losing the 9cm band so why bother". Well we haven't lost it yet, it's good for a little while and the more activity we get on it the better I say! All the more reason for those holding panels in their shack to pull their fingers out and get modifying...
by VK3ALB
Tue Aug 06, 2019 9:34 pm
Forum: 1296, Microwaves and Opto
Topic: Antennas for 3.4 GHz
Replies: 29
Views: 7115

Re: Antennas for 3.4 GHz

Hayden,

I've used templates from this site. Works for me on 1296 and 2403.

https://buildyourownantenna.blogspot.co ... lcome.html



Sent from my SM-T350 using Tapatalk

by VK3ALB
Mon May 27, 2019 4:34 pm
Forum: General Discussion
Topic: Hand keyed Morse clarity
Replies: 8
Views: 3754

Re: Hand keyed Morse clarity

Hi Damien, Yep agreed. I can imagine the safe interpretation will be "straight key". A more encouraging interpretation would be to use a paddle but stay away from computer generated CW - i.e. typing on a keyboard and getting CW. Yes that also precludes keyboard macros. I once asked the ACMA for an i...
by VK3ALB
Mon May 27, 2019 3:04 pm
Forum: General Discussion
Topic: Hand keyed Morse clarity
Replies: 8
Views: 3754

Re: Hand keyed Morse clarity

My personal opinion is that crap CW could be sent equally well with a straight key as a keyer but at least with a keyer there is a chance that the character spacing might be more even. What is more important in that clause is the requirement to stay within band limits. By specifying a key it implies...
by VK3ALB
Mon May 27, 2019 10:57 am
Forum: General Discussion
Topic: Hand keyed Morse clarity
Replies: 8
Views: 3754

Re: Hand keyed Morse clarity

Hi Iain, It's not a requirement, simply a condition of operation. i.e. A F call can operate CW if they want but it must be hand keyed. It's on p 16 of the determinations 29 Emissions from an amateur foundation station The licensee must not operate an amateur foundation station in a frequency band me...
by VK3ALB
Mon May 20, 2019 4:07 pm
Forum: General Discussion
Topic: New look VK logger
Replies: 3
Views: 3163

New look VK logger

I like the new look of the forum.
by VK3ALB
Tue May 07, 2019 5:58 pm
Forum: Silent Keys
Topic: SV2ASP
Replies: 1
Views: 2803

Re: SV2ASP

Sad, he was pretty young. Mt Athos was one of the four places that Ken VK3AKK was still waiting to work.
by VK3ALB
Sun May 05, 2019 9:49 pm
Forum: Contests, Field Days, Portable Operation, JOTA, SOTA
Topic: Where are you???
Replies: 27
Views: 8228

Re: Where are you???

Hi All, There has been a few enhancements to Contest Radar . You can now determine the bearing and distance to other stations from your location. Simply add your location then click on the map legend or any operator you can see on the map. Below you can see the details from my operating location to ...
by VK3ALB
Fri Apr 26, 2019 2:22 pm
Forum: General Discussion
Topic: What's on your Workbench?
Replies: 610
Views: 83609

Re: What's on your Workbench?

Repackaging my W1GHZ 10GHz transverter into a more manageable enclosure. You can see the original layout on my QRZ page. The antenna is a MTi panel mounted behind the aluminium panel. DEMI 2.5W PA, the remainder should be recognizable. I've tried to make all my small transverters 300mm x 300mm becau...
by VK3ALB
Fri Apr 26, 2019 7:49 am
Forum: Transceivers, Transmitters & Receivers
Topic: Icom IC-9700 users topic
Replies: 151
Views: 29842

Re: Icom IC-9700 users topic

Has anyone looked for the TCXO in the 9700? I wonder if it's possible to put a bit of foam or other insulating material over/around it to minimise the influence of the fan.
by VK3ALB
Mon Apr 15, 2019 6:34 pm
Forum: Transceivers, Transmitters & Receivers
Topic: Icom IC-9700 users topic
Replies: 151
Views: 29842

Re: Icom IC-9700 users topic

Thanks

Plus 24 extra characters
by VK3ALB
Mon Apr 15, 2019 5:14 pm
Forum: Transceivers, Transmitters & Receivers
Topic: Icom IC-9700 users topic
Replies: 151
Views: 29842

Re: Icom IC-9700 users topic

I am amazed that there has been almost no discussion about the short (TX) and long term drift on the IC-9700. Other forums have discussed it at length. . . . The external reference lock facility is poorly implemented as it is a one time calibrate and not a continuous lock. Good luck to the early pu...
by VK3ALB
Mon Apr 15, 2019 7:54 am
Forum: 1296, Microwaves and Opto
Topic: Remote PTT for SGLabs Transverter
Replies: 7
Views: 3625

Re: Remote PTT for SGLabs Transverter

Hi Darrell, Good job on pulling this all together. If you don't mind getting inside your radio with a soldering iron you can simplify your installation somewhat. You do away with your external bias tee and build it into your radio. Once you've modified your radio the comport problem goes away as you...
by VK3ALB
Sun Apr 07, 2019 10:49 am
Forum: PC/Mac Hardware
Topic: Viewing laptop screen in bright sunlight.
Replies: 1
Views: 3737

Viewing laptop screen in bright sunlight.

In the past I have hauled a portable shack into the field which meant I had no problem seeing my laptop screen even on a sunny day. There are places I want to go that make it impossible to bring the shack. In fact, I can't even bring the car. I have a late model laptop which is not bad but bright su...