Tuesday, February 19, 2013
NWS Radio Site is Off Air Due to Copper Theft
Guererro said that county authorities reported that vandals broke into the transmitter building north of Coleman and stole the copper data feed lines that come from the city of San Angelo. The weather alert transmitter, which identifies as WXN-89, operates at 162.475 MHz. News reports say that many area Weather Alert radios and scanners are tuned to that frequency.
The lines are being replaced and the transmitter should be back on the air by the time you hear this report. Federal officials as well as Coleman county authorities are investigating the break-in and vandalism that damaged the federal government transmitting facility. (Nuizer.com, Brownwooid News)
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KWWK KNOCKED OFF THE AIR BY COPPER THIEF
Rochester Minnesota police are investigating a recent copper theft that took a local radio station off the air. Early Monday, February 4th, someone broke into the KWWK radio transmitter and tower site. The thief made off with both copper transmission line and a motor. An engineer found the crime when he went into work around 4 a.m.. Damage to the property is estimated at $550. (KTTC, others)
Monday, February 18, 2013
U.S. Tornado Environment Browser
source; http://www.spc.noaa.gov/exper/envbrowser/
ARISS has switched after experiencing issues w/Kenwood D700
Frank Bauer, KA3HDO, is AMSAT's Vice President for Human Spaceflight Programs. He says that for some reason signals from the Service Module Kenwood D700 radio are much diminished. He notes that a recent contact with Israel had low audio levels. Another contact with the Hospital for Sick Children was even worse. Only one student was able to talk to Chris Hadfield before signals on the ground were lost even though the crew reports hearing the ground station well.
It should be noted that both these contacts were with made using telebridge stations which have above average gear. Also astro-ham Hadfield used the space stations IP Phone, immediately after the hospital radio contact and answered all the student's questions so that all was not lost. A later contact with a school in Japan using the Columbus Module Ericsson radio proved very successful. (ANS, ARISS)
Friday, February 15, 2013
Metorite Impacts Russia; 500 injured.
Meteorite hits Russian Urals: Fireball explosion wreaks havoc, up to 500 injured (PHOTOS, VIDEO)
Click Here
http://rt.com/news/meteorite-crash-urals-chelyabinsk-283/
Close Earth Flyby of Asteroid
source;
SpaceWeather.com
http://spaceweather.com/
NASA
http://www.nasa.gov/mission_pages/asteroids/news/asteroid20130201315144.html
Friday, February 1, 2013
QCWA Dayton Banquet Announced
More Dayton Hamvention related news this week. This in the
announcement by the Quarter Century Wireless Association
that it will be holding QCWA Banquet: on Friday May 17th at
the Dayton Airport Holiday Inn. The dinner begins at 7:30
p.m. Eastern Daylight Time . The after dinner speaker will
be James Crabtree with a presentation on Lincoln. Cost is
$25 per person. Reservations and payment go to Jerry
Ragland, WA8BOB, 409 Park Av. Franklin, Ohio, 45005.
Thursday, January 31, 2013
39th Annual Eastern VHF/UHF/MICROWAVE Conference
Registration is now open for the 39th annual Eastern VHF/UHF
and microwave conference to be held April 26th to the 28th
at the Baymont Inn and Suites in Manchester, Connecticut.
This years program includes numerous talks and presentations
for those who enjoy operating in the world above 50 MHz.
This yearly get together is sponsored by the North East Weak
Signal Group. More information including registration and
hotel information can be found at
www.newsvhf.com/vhfconf.html
(W1GHX, VHF Reflector)
Tuesday, January 29, 2013
Coalition Pushes FCC to Reclaim at least 120 MHZ of Broadcast Spectrum
The coalition of broadcasters willing to sell spectrum
rights has grown to 39 major market stations. This
according to comments filed to the FCC by the Expanding
Opportunities for Broadcasters Coalition. The trade group
also wants the regulatory agency to make the auction as
attractive as possible by not limiting wireless bidders or
which stations can share spectrum.
The coalition was formed because the principal broadcast
trade association, the National Association of Broadcasters,
is focusing on making sure the auctions hold harmless
broadcasters who are not selling and want to remain in the
business. The coalition members don't have to identify
themselves publicly because of the obvious competitive and
operational issues related to publicizing their willingness
to sell. However they are reportedly pushing the FCC to
reclaim at least 120 MHz of spectrum.
The deadline for comments on the FCC's framework for
broadcast incentive auctions was January 25th. Reply
comments are due in March.
Coalition Pushes FCC to Reclaim at least 120 MHZ
of Broadcast Spectrum
Thursday, January 17, 2013
Stealth ST-940B Mobile HF NVIS Magnetic Loop Antenna
The highly efficient auto tune antenna radiates with an almost vertical take-off angle. It provides reliable communication within distances that are traditionally affected by skip zones created by the radiation pattern of non-NVIS antennas.
A closed H/Q loop circuitry ensures significant increase in transmitting end receiving power as well as reception immunity to ignition and industrial noise. Compared with the traditional whip-type vehicle antennas, the ST-940B gives an additional 9dB of omni-directional gain, even in regions with poor soil conductivity. As a result, the overall performance of the entire vehicular HF installation is now much higher than other vehicle antenna systems.
The NVIS Mobile loop ST-940B antenna is skillfully modeled with extensive use of NEC CAD software. The roof rack has been meticulously designed to become an integral part of the antenna system rather than building the antenna around a random rack. The fully functional roof rack can also be used for carrying almost any kind of cargo, except fuel and light flammables.
The all-welded lightweight aluminum construction of the ST-940B HF Mobile antenna provides physical strength, excellent tuning point stability and protects the mechanical parts of the antenna from damage. Made to the highest quality standards and with extensive knowledge of materials, the construction is free of environmental problems such as corrosion due to dissimilar metal joints, UV degrading, low temperature cracking and dehermetization.
The shock-sensitive components of the system are protected by aircraft-type shock absorbing vibroframe. The micro-processor controlled interface of the Stealth ST-940B allows for flexibility in connection with any type of mobile HF transceiver.
Features:
- Power Rating – The antenna is rated for a maximum RF power of 150W PEP.
- Fully Automatic Operation – The motorized folding loop can change its position within seconds from inside the moving vehicle at any time. The antenna is designed so that it normally operates when the hinged loop is raised. However to support ALE/CALM and other networking functions of modern transceivers, the antenna can work for reception even when the loop is folded down. This feature allows for the vehicle to maintain a “hidden look” till transmission is required.
- Multipurpose Graphic Remote Control – The rugged construction of the antenna remote control unit allows control and observation of the current antenna position and tuning parameters, through large, easily readable mnemonic symbols and messages on the bright OLED display that is installed on the vehicle’s dashboard.
- Intelligently Designed User Interface – It allows customers to change warning sound signals as well as provides computerized access for radio technicians to the system parameter settings and diagnostics.
- Easy Installation and Operation – The Antenna is easily installable on the hard roof of vehicles, end both installation & operation does not require highly qualified radio personnel.
More Info; Click Here
http://www.stealth-tele.com/plugins/custompages/detinf.php?id=372&id_categories=156
Tuesday, January 15, 2013
Night of Nights 10
One day I might be half as good at sending CW~
Hat Tip to my Friend & Elmer, Bill (N8AM) for sharing this with me.
Video of 'DA', also known as Denice Stoops, the first female telegrapher who worked at KPH until the end of commercial morse operations and closure of the station in 1998.
Denice is seen here sending the closing transmissions of the MRHS (see them at www.radiomarine.org ) Night of Nights 10. Each year (in this case exactly 10 years) to the minute, that commercial morse operations ceased in the United States, former RCA shore station KPH comes alive to pay tribute to those who came before us to honor their skill and talents. Many other maritime shore stations and vessels join in, and thousands of people all over the world tune in each year to pay tribute, and copy the CW 'music' once again commanding the airwaves.
This video was shot in the control room at the KPH, KSM, KFS transmitter site and brought to a close Night of Nights X. The KPH 'wheel' is being sent in the beginning of the video before transmitter supervisor Steve Hawes 'pulls the plug' and connects DA's chrome Vibroplex bug to the panel to key all the transmitters at once. The whole building is electrified by the transmitters and the spirit of the men (and women) that were the only connection between those at sea and the world. It is an emotional experience to be part of such an event.
Friday, January 11, 2013
Kewl Mobile Antenna
Log4Om version 1.11.4 Released
Some of the key functions are:
- Interfaced with QRZ.COM e HAMQTH.COM for rapid search and QSO data enhancements (massive update supported).
- Innovative graphic DX Cluster management, with SPOT real time view on world map and auto tuning of the radio with CAT support.
- Super Cluster: An alternative cluster based on online data sent by users to HRDLog.net
- MySQL support for large databases and multi operator operations.
- CAT support for numerous radios, through HAMLIB and OMNIRIG
- Cluster integrated with propagation informations by HRDLog.net
- ADIF import and ADIF / Excel (csv) / PDF export of log
- Integrated with E-QSL, LOTW, ClubLog and HRDLog.net.
- Fast and simple forms for help OM’s to write old good paper QSL with ease.
- Complete log searching features, Log4Om enables the OM to update offline the QSO with updated informations.
- Optimized for “paper to electronic” log conversion, with features that drammatically speeds up the speed of inserting QSO (auto-time functions with predefined QSO separations, automatically set timings for fast pile-up management)
- Language selectable English and Italian
- Complete label print feature— — —
- Log4OM 1.11.4 (123) DUE TO SOME COMPONENT UPDATES A FULL UNINSTALL OF PREVIOUSLY INSTALLED VERSION IS REQUIRED
- Log4OM 1.11.4 Portable (USB key version) (25)
- Log4OM latest user manual (ENG) (471)
http://www.pisto.it/wordpress/log4om-en/
Wednesday, January 9, 2013
Standard C-50D
Frequency range: 144-146 / 430-440 MHz (10 m/50 W (CRF-081D) or 23 cm/10 W (CRF-301) options)
(5/10/12.5/20/25/50/100 KHz and 1 MHz steps)
Mode: FM
RF Power output: Hi: 50/40 W / Mid: 5/5 W / Lo: 1/1 W
Receiver system: 2 m/70 cm: Dual-conversion superheterodyne
1st IF: 21.8 MHz (2 m), 47.05 MHz (70 cm)
2nd IF: 455 KHz (2 m/70 cm)
Sensitivity: 0.16 uV (12 dB SINAD)
Selectivity: 12 KHz (-6 dB), 24 KHz (-60 dB)
Image rejection: 2 m: 65 dB
70 cm: 60 dB
Voltage: 13.8 VDC or mains
Current drain: RX: 1.3 A
TX: Max 12 A
Impedance: 50 ohms
Dimensions (W*H*D): 362*109*365 mm
Weight: 11.5 Kg
Manufactured: Japan, 1991-199x
Other: Remote control. 33 memories. CTCSS and DTMF options.
Related documents: PA modules: S-AV17 (2 m), M57788M (70 cm)
Monday, January 7, 2013
Amateur (Ham) Radio Articles of Interest
- In Defense of Ham Radio
- Sprint Says Yes to FM Chip in Smartphones
- Harris Broadcast Looks Ahead to Gores
- Smith-Mundt Act Amended
- Codec Trends Special Report: Hartnett
- Central Middle School Radio Club
- Hamvention® Awards Nomination Deadline Extended to February 15
- New Book on Handheld Transceivers, 2012 Periodicals DVD Now Available
HOW TO READ PROPAGATION NUMBERS
The A index [ LOW is GOOD ]
- 1 to 6 is BEST
- 7 to 9 is OK
- 11 or more is BAD
Represents the overall geomagnetic condition of the ionosphere ("Ap" if averaged from the Kp-Index) (an average of the eight 3-hour K-Indices) ('A' referring to amplitude) over a given 24 hour period, ranging (linearly) typically from 1-100 but theoretically up to 400.
A lower A-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Ap-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
SFI index [ HIGH is GOOD ]
- 70 NOT GOOD
- 80 GOOD
- 90 BETTER
- 100+ BEST
The measure of total radio emissions from the sun at 10.7cm (2800 MHz), on a scale of 60 (no sunspots) to 300, generally corresponding to the sunspot level, but being too low in energy to cause ionization, not related to the ionization level of the Ionosphere.
Higher Solar Flux generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; Solar Flux rarely affects the 30, 40, 60, 80, & 160 Meter Bands.
K index [ LOW is GOOD ]
- 0 or 1 is BEST
- 2 is OK
- 3 or more is BAD
- 5 is VERY VERY BAD
The overall geomagnetic condition of the ionosphere ("Kp" if averaged over the planet) over the past 3 hours, measured by 13 magnetometers between 46 & 63 degrees of latitude, and ranging quasi-logarithmically from 0-9. Designed to detect solar particle radiation by its magnetic effect. A higher K-index generally means worse HF conditions.
A lower K-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Kp-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
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