Search found 711 matches

by VK5PJ
Sun Feb 09, 2020 5:26 pm
Forum: Arduino, Picaxe, Raspberry Pi, and variants
Topic: My Pi Journey, the next generation
Replies: 5
Views: 867

Re: My Pi Journey, the next generation

Okay time for an SDR on the PI-4 RTL-SDR RTL2382U 0.5 PPM TCXO Software Defined Radio Receiver Dongle (on ebay for $28) has SMA antenna connector and reasonably good stability with the TXCO. I have used this for monitoring FT8 on 50.313 for weeks at a time, with no need to fiddle the frequency to de...
by VK5PJ
Thu Feb 06, 2020 1:04 pm
Forum: Transceivers, Transmitters & Receivers
Topic: TS-2000X no tx or rx after full reset
Replies: 2
Views: 402

Re: TS-2000X no tx or rx after full reset

Hi Andy, first thing I would do if it was mine, is another FULL reset but do not load any settings from before, check radios operation in this 'naked' state, there might have been a corruption in the saved setting and it may have tried to set a weird IF offset to the radio or corrupt and RF path to ...
by VK5PJ
Wed Jan 15, 2020 9:36 am
Forum: Arduino, Picaxe, Raspberry Pi, and variants
Topic: My Pi Journey, the next generation
Replies: 5
Views: 867

Re: My Pi Journey, the next generation

my next challenge has been that the screen resolution via VNC on remote connections is very low. I had not experienced this on my earlier PI's so was a little frustrated that the new PI 4 popped up this problem but it would seem it is not all that un common https://www.raspberrypi.org/forums/viewtop...
by VK5PJ
Thu Jan 02, 2020 3:32 pm
Forum: Arduino, Picaxe, Raspberry Pi, and variants
Topic: My Pi Journey, the next generation
Replies: 5
Views: 867

Re: My Pi Journey, the next generation

Wow, how things change between linux version, went to use the graphical file manager today and it just exits after opening (display is there for less than a second). Grrr I quite like the inbuilt file manager, so Mr Google reveals I am not alone. https://www.raspberrypi.org/forums/viewtopic.php?t=25...
by VK5PJ
Thu Jan 02, 2020 6:37 am
Forum: Arduino, Picaxe, Raspberry Pi, and variants
Topic: My Pi Journey, the next generation
Replies: 5
Views: 867

Re: My Pi Journey, the next generation

Oh dear, I knew there was a reason why I hate FANS, one of the pair of micro small fans on the PI-4 cooler I linked in the original posting has become noisy and just 4 hours of service, back to passive cooling for now.
by VK5PJ
Tue Dec 31, 2019 4:05 pm
Forum: Arduino, Picaxe, Raspberry Pi, and variants
Topic: My Pi Journey, the next generation
Replies: 5
Views: 867

Re: My Pi Journey, the next generation

Okay, 1st quirk, it would seem the release of the Raspbian O/S on my SD card is a little old and when I try to upgrade I get this lovely message pi@raspberrypi:~ $ sudo apt-get update Get:1 http://raspbian.raspberrypi.org/raspbian buster InRelease [15.0 kB] Hit:2 http://archive.raspberrypi.org/debia...
by VK5PJ
Tue Dec 31, 2019 3:56 pm
Forum: Arduino, Picaxe, Raspberry Pi, and variants
Topic: My Pi Journey, the next generation
Replies: 5
Views: 867

My Pi Journey, the next generation

Hi, well it is time for a new PI here as I always felt the PI 3B was a little slow doing decodes on the FT8 mode of WSJT-X and now with FT4 around, I felt I needed more horsepower to get the job done. Went ahead with the purchase of a Raspberry PI 4 from the same supplier as before (Little Bird Comp...
by VK5PJ
Sat Dec 14, 2019 4:22 am
Forum: WSJT
Topic: WSJT-X configurations
Replies: 0
Views: 772

WSJT-X configurations

Hi, I am not sure if many people are aware or use these but they are one of the gems of WSJT-X. Why so, well on the Configurations menu you can create a seemingly endless list of different configurations to match your operating habits. My shack PC has a list that goes like this: WSJT-X-Config-1.jpg ...
by VK5PJ
Tue Nov 26, 2019 1:02 pm
Forum: Contests, Field Days, Portable Operation, JOTA, SOTA
Topic: FT8 FT4 Contest Mode
Replies: 3
Views: 800

Re: FT8 FT4 Contest Mode

Hello Trent, there is a dedicated CONTEST mode within WSJT-X for similar USA based contests, just wondering if you have explored those, the only trouble you will have is getting other stations to change to contest mode to exchange the correct responses. This has been a hot topic in past months on th...
by VK5PJ
Wed Nov 20, 2019 7:53 pm
Forum: Beacons
Topic: VK5RBV to come back at Full steam
Replies: 17
Views: 7669

Re: VK5RBV to come back at Full steam

Yes SKI, P.A is on in class C all the time, I kept the Audio/ control board in there but cut the traces going to the Audio Amp and the other regulator so they can not mysteriously cause a fault. Also removed the change over relay in the P.A and put a wire link in its place. By doing this I keep the ...
by VK5PJ
Sat Nov 16, 2019 7:29 pm
Forum: Beacons
Topic: VK5RBV to come back at Full steam
Replies: 17
Views: 7669

Re: VK5RBV to come back at Full steam

Hi Ski, I did not try to add the keying cct from the ZL2BKC board as I was in a major hurry to get it on air before our trip to Egypt (now back from 2 weeks away). It had occurred to me afterwards that the pre-driver on the P.A board is supplied from a separate 10 volt reg supply (controlled by R7 o...
by VK5PJ
Sun Oct 27, 2019 4:22 pm
Forum: Beacons
Topic: VK5RBV to come back at Full steam
Replies: 17
Views: 7669

Re: VK5RBV to come back at Full steam

Thanks for the tip SKI, have not run across many PRM80's from low band. VK5RBV, 50.456 MHz, 1 min CW 1 min JT65A, about 12 W into the original HALO antenna, 27th Oct 2019. Sounds OK at home and 5BC said it was strong at his place.. VK5RBV, 144.456 MHz, 1 min CW 1 min JT65B, about 15 W into single a ...
by VK5PJ
Sun Oct 27, 2019 7:21 am
Forum: Beacons
Topic: VK5RBV to come back at Full steam
Replies: 17
Views: 7669

Re: VK5RBV to come back at Full steam

Well, it has been a while, found the Mitsubishi module on 50.456 was dead, not a board fault Hmmph. Went looking of a replacement module, nope, no longer available. A new version is advertised out in Google land but only people with stock seem to be China and I am not willing to take that gamble. (M...
by VK5PJ
Wed Oct 16, 2019 2:11 pm
Forum: 144 & 432 MHz
Topic: VK5ZJA Preamp
Replies: 4
Views: 4096

Re: VK5ZJA Preamp

Hi John et all, that version of the VK5 preamp was designed by vk5zja and were promoted and made available through the then VK5 Equipment Supply committee (ESC) for may years (part of the then local WIA branch). The ESC was one of those volunteer run groups that reveled in finding rare parts and mak...
by VK5PJ
Mon Sep 23, 2019 9:41 am
Forum: Transceivers, Transmitters & Receivers
Topic: FT-817 front BNC fault
Replies: 8
Views: 3105

Re: FT-817 front BNC fault

Hi Hayden, before you replace it, can you see coil voltage on it change when you select rear panel / front panel from the menu as they should CLICK when you change in the menus?

Peter
by VK5PJ
Thu Sep 12, 2019 8:00 pm
Forum: EMC, Interference
Topic: Tesla battery wall v 2.0
Replies: 7
Views: 3103

Re: Tesla battery wall v 2.0

here is a link I did not find earlier, where a US station has gone through the process of RF suppression

http://ka7oei.blogspot.com/2017/12/does ... e-rfi.html
by VK5PJ
Wed Sep 11, 2019 12:32 pm
Forum: EMC, Interference
Topic: Tesla battery wall v 2.0
Replies: 7
Views: 3103

Re: Tesla battery wall v 2.0

Okay, now for the bad news, after the first few days of really cloudly weather at the start where the battery did not completely charge, the sun has come out and now the battery gets to 100%. It would seem that once at 100% charge, it goes into a different mode and the bands of RF noise starts acros...
by VK5PJ
Sun Sep 08, 2019 6:46 pm
Forum: EMC, Interference
Topic: Tesla battery wall v 2.0
Replies: 7
Views: 3103

Re: Tesla battery wall v 2.0

Here are the promised photos from the install
Early stage of the install
Early stage of the install
finished install, with existing 5KW solar to the left
finished install, with existing 5KW solar to the left
by VK5PJ
Sun Sep 08, 2019 7:41 am
Forum: EMC, Interference
Topic: Tesla battery wall v 2.0
Replies: 7
Views: 3103

Re: Tesla battery wall v 2.0

Hi, here is an update, the Tesla PowerWall 2 is in and it works. Of course it is terrible cloudy weather at present as not seen it get to 100% reserve yet but first few nights we were 90% self powered by the PowerWall with little coming from the grid (included cooking a roast in the electric oven). ...
by VK5PJ
Mon Sep 02, 2019 12:16 pm
Forum: EMC, Interference
Topic: Tesla battery wall v 2.0
Replies: 7
Views: 3103

Tesla battery wall v 2.0

Hi about to embark on the install of a version 2 Tesla battery wall as I want my power consumption from the shack to not come from the grid overnight. Have taken a bit of a RFI base line and hope not to see any big birdies or wide band noise after the install. This has all come about after my failed...