2014-12-30 First HF voice (phone) contact 6 years ago
After a lot of digital mode contacts (QSOs) I actually talked to someone today on HF radio. I heard UR5QW calling CQ on 10 meters HF in SSB (single side band). I was trying to find interesting stations via the Websdr in Twente but I actually heard UR5QW via the radio first and answered and we had a short but understandable QSO. Searching for interesting signals via the websdr in Twente can be frustrating: it has less local noise than I have at home, so it can be I can understand a station via the websdr but not at home.
2014-12-29 Time to update the leapsecond file 6 years ago
I recently upgraded ntpd due to the vulnerabilities found in ntpd prior to version 4.2.8. This version is also a bit better in error logging, and I started seeing in the logs:Dec 21 20:53:06 ritchie ntpd: leapsecond file ('/etc/ntp/leap-seconds.3535228800'): loaded, expire=2014-12-28T00:00Z ofs=35 (no entries after build date) Dec 21 20:53:06 ritchie ntpd: leapsecond file ('/etc/ntp/leap-seconds.3535228800'): will expire in less than 7 days Dec 22 20:53:06 ritchie ntpd: leapsecond file ('/etc/ntp/leap-seconds.3535228800'): will expire in less than 6 days Dec 23 20:53:06 ritchie ntpd: leapsecond file ('/etc/ntp/leap-seconds.3535228800'): will expire in less than 5 days Dec 28 00:53:06 ritchie ntpd: leapsecond file ('/etc/ntp/leap-seconds.3535228800'): will expire in less than one daySo I followed the documentation in ConfiguringNTP: 6.14. Using the NIST Leap Second File and upgraded to leap-seconds.3644438400 which now loads fine:Dec 29 11:25:29 ritchie ntpd: leapsecond file ('/etc/ntp/leap-seconds.3644438400'): good hash signature Dec 29 11:25:29 ritchie ntpd: leapsecond file ('/etc/ntp/leap-seconds.3644438400'): loaded, expire=2015-06-28T00:00Z ofs=35 (no entries after build date)
2014-12-27 Headset interface for the FT-857 radio 6 years ago
I was looking for something else on AliExpres and found this interesting gem: 1PC FT-897 /FT817/857 / PTT/headset/CAT adapter. On the original manufacturer website: FT-8x7 Headset/PTT/CAT Adapter - Windcamp Creative Technology. Although I am not that busy with voice communications, it did look to me like this might enable me to hook up a cheaper PC headset to the radio. I was wondering why it includes a CAT (computer assisted tuning) interface. A browse of the FT-857 manual for the pinout of the 8-pin microphone connector did not give any information. The menu setting 059 'MIC SEL' has the options NOR for the normal hand microphone, RMT for the MH-59a8j remote microphone which I have and CAT for a CAT connector. The missing clue was found after some searching in Using the FT-857 Microphone Jack for Serial Control (CAT) by Bob Wolbert K6XX which lists the pinout of the 8-pin RJ45 microphone connector of the FT-857(D) in different menu 059 modes. I created a short RJ45 cable to connect the interface to the radio. I still need to create a footswitch to act as transmit switch.
2014-12-21 A cold try at working the SO-50 satellite 6 years ago
This evening there was a pass of the SO-50 amateur satellite so I wanted to give it a try again. Since the garden table is dissassembled and stored in winter I don't have a table outside to set up laptop, radio, battery and other things so I went the simple way with the directional antenna, the SO-50 channels programmed into the handheld radio and Hamsatdroid for the prediction of the pass. I heard the satellite, but had the usual problem of understanding callsigns. I heard one callsign good enough to answer it: 2E0FKL or that's what I think I heard, I am not one hundred percent sure. He did not hear my reply. Comparing my 3 successful amateur satellite contacts with the 264 logged HF digimode contacts shows me that satellite contacts still have a special skillset and I'm a bit out of it. Next year will bring nicer temperatures for being outside and having the laptop controlling the radio outside.
2014-12-19 (#) 6 years ago
Ik denk dat Univé een betere
spammere-mail marketing bedrijf moet inhuren. Uit de tekstversie van de laatste nieuwsbrief:Subject: Uw kans om het nieuwste boek van Jamie Oliver te winnen. U N I V É VERZEKERINGEN --------------------------------------------------------- U heeft een bericht van de ASN Bank ontvangen. Omdat uw systeem niet automatisch de HTML versie opent, kunt u niet de complete e-mail bekijken. Wij verwijzen u graag naar onze website asnbank.nl om over onze nieuwe website over duurzaam beleggen te lezen.
2014-12-16 Adding my weatherstation to the APRS maps 6 years ago
I still had the wish to submit the Weather station Utrecht Overvecht to the APRS network to get the data on the APRS maps and maybe even added to the Citizen Weather Observer Program. APRS stands for Automatic Packet Reporting System which allows lots of information to be automatically exchanged. The most well-known one is position reporting, but there is a lot more, including weather stations. It wasn't very hard to get this done, I just had to find the time to do it. The trigger was the mention of a new APRS server in the Netherlands at Amsterdamse APRS server - PA4TW. I played a bit with the perl modules Ham::APRS::IS and Ham::APRS::FAP. Ham::APRS::IS is for communicating with the APRS-IS network. And Ham::APRS::FAP is for parsing APRS packets. I used this module to make very sure my outgoing packets parse correctly before actually submitting them to the network (and still making a few mistakes in the process). I used the explanation and example at APRSWXNET information by Philip Gladstone to find out what to submit and in which format. The interesting point is that wind measurements can not be omitted, but since I don't have a working wind measuring setup I have to enter the '...' values to show that the measurement is not available. And temperatures are measured in Fahrenheit so I have to convert first from my measurements. The current outgoing packets look like:PD4KH-1>APRS,TCPIP*:/161010z5206.6 N\00507.1 E_.../...g...t045h91b10088http://weatherstation.idefix.net/And now the weatherstation shows fine: PD4KH-1 weatherstation on aprs.fi and Weather stations near PD4KH-1 on findu.com. Note how aprs.fi converts to degrees Celcius and findu.com stays in Fahrenheit.
2014-12-14 N-cursus radiozendamateur in Utrecht 6 years ago
Bij de Veron afdeling Centrum is vanaf 5 januari 2015 weer plaats voor enkele cursisten die de "Novice" amateur radio licentie willen behalen. Voor mensen uit de buurt die nadenken om dat een keer te halen misschien het ideale goede voornemen voor 2015! Meer informatie: N-cursus radiozendamateur Fort de Gagel start 5-01-2015.
2014-12-14 (Dalek garbage can. Exterminate all garbage!) 6 years ago
: Dalek garbage can. Exterminate all garbage!
2014-12-13 (In searching for a TCXO for my FT-857 I also ran across this item on aliexpress and decided to buy it...) 6 years ago
: In searching for a TCXO for my FT-857 I also ran across this item on aliexpress and decided to buy it. This should enable me to use a good PC headset on the radio for voice operations.
I wasn't sure why it needs a CAT interface but looking at the windcamp website combined with the aliexpress description I guess this is just a second CAT interface to the radio.
2014-12-12 (Trying to make a picture of my FT-857 radio for my http://pd4kh.idefix.net/ site. The radio is in the...) 6 years ago
http://pd4kh.idefix.net/ site.: Trying to make a picture of my FT-857 radio for my
The radio is in the mode I use most at the moment: PSK31 on 10M HF.
I'm not completely satisfied yet with the picture or the placement on the site but it's a start, and it's my picture of my radio which is a lot better than some stock picture.
2014-12-11 IPv6 breaking without default router 6 years ago
Interesting type of IPv6 breakage currently at the Surf office:Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : eduroamers.nl IPv6 Address. . . . . . . . . . . : 2001:610:188:431:9d25:9938:408e:6714 Temporary IPv6 Address. . . . . . : 2001:610:188:431:2c5e:681:fda1:702 Link-local IPv6 Address . . . . . : fe80::9d25:9938:408e:6714%11 IPv4 Address. . . . . . . . . . . : 126.96.36.199 Subnet Mask . . . . . . . . . . . : 255.255.252.0 Default Gateway . . . . . . . . . : 188.8.131.52What's missing here? A default gateway for IPv6. Which breaks any external IPv6 connectivity. And I like having external IPv6 connectivity, for example for logging into systems at home. The solution is simple:C:\>ipconfig /renew6 Windows IP Configuration Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : eduroamers.nl IPv6 Address. . . . . . . . . . . : 2001:610:188:431:9d25:9938:408e:6714 Temporary IPv6 Address. . . . . . : 2001:610:188:431:2c5e:681:fda1:702 Link-local IPv6 Address . . . . . : fe80::9d25:9938:408e:6714%11 IPv4 Address. . . . . . . . . . . : 184.108.40.206 Subnet Mask . . . . . . . . . . . : 255.255.252.0 Default Gateway . . . . . . . . . : fe80::222:dff:fe84:8800%11 220.127.116.11I wonder how this happens. Update 2014-12-15: And I got in touch with someone at SURFnet who suggested the best cause of action: see if this problem persists after the upcoming move of the SURFnet offices. Update 2015-06-03: And now the IPv6 over the wireless network at the Surfnet offices is fixed.
2014-12-10 (PA3FYM explaining the setup he used for the CQWW CW contest on 160m.) 6 years ago
: PA3FYM explaining the setup he used for the CQWW CW contest on 160m.
2014-12-10 (#) 6 years ago
Sommige slechte spam vertalingen worden van zichzelf weer erg grappig:Ik schrijf u thismessage met tranen en verdriet en ik weet dat deze massage zal u verrassen
2014-12-09 (“The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED...) 6 years ago
: Just wow.
2014-12-09 (I'm seeing SSH attempts for admin, ftpuser and D-Link from high numbers of addresses.) 6 years ago
: I'm seeing SSH attempts for admin, ftpuser and D-Link from high numbers of addresses.
2014-12-09 SSH attacks for accounts ftpuser, admin and D-Link 6 years ago
Loads of mail from fail2ban-SSH on two separate hosts showing random hosts doing ssh attempts for 3 accounts since 18:58 this evening. The pattern looks like:Read the rest of SSH attacks for accounts ftpuser, admin and D-LinkDec 9 18:58:04 greenblatt sshd: Invalid user ftpuser from 18.104.22.168 Dec 9 18:58:04 greenblatt sshd: Invalid user admin from 22.214.171.124 Dec 9 18:58:05 greenblatt sshd: Invalid user D-Link from 126.96.36.199 Dec 9 19:06:54 greenblatt sshd: Invalid user ftpuser from 188.8.131.52 Dec 9 19:06:55 greenblatt sshd: Invalid user admin from 184.108.40.206 Dec 9 19:06:55 greenblatt sshd: Invalid user D-Link from 220.127.116.11And it goes on and on...
2014-12-09 (Afvalwijzer heeft een beetje moeite met het correct uitvoeren van push notificaties) 6 years ago
: Afvalwijzer heeft een beetje moeite met het correct uitvoeren van push notificaties
2014-12-06 (Posts generated by a Markov chain trained on the Puppet documentation and the assorted works of H. P...) 6 years ago
2014-12-05 DAB services scan 5 December 2014 6 years ago
Tijd voor een DAB services scan. Nu de aanbestedingen voor de bovenregionale DAB netten lopen zal er over een tijdje wel een uitbreiding komen van het aanbod.Read the rest of DAB services scan 5 December 2014
2014-12-05 (#) 6 years ago
Lots of spam the last few days for www.omerta.cc. Since www.omerta.cc is a website where stolen credit card information is traded where you have to pay to get in I don't think they really want to advertise themselves. So this is probably a joe-job. Which won't work much since www.omerta.cc is hiding behind cloudflare.
2014-12-04 (Really interesting presentation. The one thing I do note is that a lot of experimenting is done with...) 6 years ago
: Really interesting presentation. The one thing I do note is that a lot of experimenting is done with new(er) technologies but people keep beating up IPv4 RFC1918 space (10.x.y.z IPv4 addresses). IPv6 can do so much more and with some thinking about addressing policies a globally routable network can be created which will not clash with any address on other networks.
2014-12-03 (Big plans at Amsat India! "We are pleased to announce that AMSAT India and Dhruva Space Pvt. Ltd. have...) 6 years ago
: Big plans at Amsat India!
"We are pleased to announce that AMSAT India and Dhruva Space Pvt. Ltd. have signed a Memorandum of Understanding on November 30th 2014 to pursue the development of a follow up mission to HAMSAT launched in 2005 on-board the PSLV-C6. HAMSAT II is envisioned to fill the gap created by the recent end of life of HAMSAT and shall continue servicing the societal needs in disaster management, amateur/emergency radio communications and education. Some of the contemplated payloads for HAMSAT II include
* U/V Analog FM Transponder
* U/V Linear Transponder, 50 kHz
* APRS Digipeater
Dhruva Space is developing the complete satellite bus including all the spacecraft subsystems such as the electrical power system, attitude control system, communication system, structure and on-board computer. AMSAT India shall deliver the payloads for the satellite. The satellite is intended to be flown into a Polar Sun synchronous Low Earth Orbit.
This memorandum of understanding has brought together some of the best minds of AMSAT India and Dhruva Space. They are extremely delighted about the association and expressed their happiness on coming together to pursue their quest for innovation in space"