High quality NOAA 19 APT images
I was contacted by Paul Glover who lives in Worthing West Sussex and is using a…
WeSaCom APT-06 APT receiver
Fed by signals from a…
KX-137 active VHF turnstile antenna
… which as can be seen from the photo above is not mounted on a huge mast with a perfectly clear view of the horizon. This equipment was bought just over a y
ear ago from Wraase Electronics of Altenholz Germany. This setup had been working very well until recently when some images were marred by reduced quality and some narrow herringbone lines running at about a 10 degree angle across and down parts of the image. Paul had tried an uninstall and reinstall of WXtoIMG which he found apparently worked a few times but then no longer had any effect.
I was unable to offer any concrete suggestions beyond some local noise source but doubted the fault lay with WXtoIMG.
Paul got back to me to say he had isolated the problem to the soundcard and was temporarily using an alternate PC. He has been kind enough to offer his latest images for use on DigitalHam. They show just what can be achieved when there is no pager interference. Quite apart from that though they show virtually no low elevation noise (top and bottom of image clear) so obviously his antenna and radio are working better than mine too – I suspect that the masthead preamp in the KX-137 m
ust take much of the credit here. Given the pager noise I won’t be making alterations to my own setup until I have more time on my hands when I’ll initially have a go at making a notch filter to zap that pesky pager tower.
Click the thumbnails to see the full sized image.
I’ve had a fair amount of correspondence with Paul and now DigitalHam is running WordPress I’ve
added much of it as Comments to this page.
43% of all statistics are worthless.
Hi Paul,
I know how to update the PC time but it’s already correct as I verified against my radio controlled wallclock. I don’t think it was ever wrong yet I still occasionally see overlay errors.
If your PC clock isn’t keeping good time the most likely suspect is the battery that powers the CMOS when the PC is switched off. If it goes flat completely you could lose some of the settings so best replace it. Modern PCs just use Li-ion button cells which cost £1 a bucketful on eBay.
Hey Mark.
The two links you sent me yesterday both take me to the same page with
a picture of your aerial and above that it says, Welcome to Digital Ham .
a lot of the links on the left side do not work, I think you may have a glitch here.
Maybe you could look at this and tell me what I am looking for.
thanks.
Paul
(This comment was actually added by DigitalHam as a test when not signed in as site administrator)
Paul,
The links should have taken you to the new version of the page about your satellite receiving kit with our emails added as comments.
I’ve just done a test on the site using a remote server and it seems to be picking up the old site – I’m guessing there are pages cached in proxies. I set up redirects for the old pages to the new but they all rely on the main site entry page being retrieved correctly and will not work without it. I hadn’t realised that could happen and it may take several hours before you can correctly access the new format site.
Mark
(I’m adding this as a plain site visitor not admin)
Actually this was a major screwup on my part.
I’d amended the WordPress index.php to pull in the original home page for any IP address other than my own. I’d modified it back to standard once I was happy with the WordPress version of the site but forgot to upload it. Last night I uploaded redirects for all of the old pages to their WordPress versions but that just results in every link giving the original home page – Word Press urls are all processed by the WordPress system to fetch the page content from the database and serve the page but of course it was only me getting the WordPress index.php
Hope it won’t have screwed up my google indexing too badly
Ho Hum.
Mark
Hey Mark.
All seems to be working ok now, looks good from here.
I will check it again later.