viernes, 24 de febrero de 2012

KN-Q7A Single Band SSB Transceiver Kit

The KN-Q7A single band SSB transceiver kit was designed specifically for the worldwide market by BA6BF, and kitted by BD6CR/4. As the upgraded version of the popular KN-Q7 (more than 500 kits were sold worldwide), the KN-Q7A has an improved circuit design and component selection, which makes it an ideal candidate for field operation, back pack and emergency use.






Improvements from KN-Q7
• Improved Low Pass Filter (LPF) circuit to meet the -43 dBc standard
• Added post IF amplifier one pole crystal filter to reduce background noise
• Removed RX/ TX indicator LED to further reduce RX current consumption by about 5 mA
• Added an on-board RF attenuator in the receiver front end to reduce broadcast interference
• Added power polarity protection
• Larger chassis area (+25%) used as heat sink to reduce thermal drift
• More frequency coverage options: support for European calling frequency 7.090 MHz and American calling frequency 7.285 MHz
• Matched IF filter crystals to ensure good selectivity
• Improved part selection, and reduction of SMD part count to just one transistor
Specifications:
• Dimension: 153 mm x 97 mm x 40 mm, not including protruding features
• Weight: less than 500 g or 1.1 lbs
• Power Supply: 12~13.8 V, 3 A
• Current consumption: 30 mA in RX and about 2 A in TX @ 13.8 V
• RF output: about 10 W PEP @ 13.8 V • Spur suppression: better than -43 dBc
• Sensitivity: about 0.5 μV at 10 dB SNR • IF filter: 6 pole crystal ladder filter + 1 pole post IF amplifier crystal filter
• IF bandwidth: about 2.0 kHz
• IF frequency: 8.467 MHz or 8.192 MHz, depending on the selected tuning range
• Frequency tuning range: about 20 kHz in VXO type.
Five options: 7.050~7.070 MHz, 7.080~7.100 MHz, 7.145~7.165 MHz, 7.200~7.220 MHz, or 7.280~7.300 MHz
Connectors:
• Speaker output: 3.5 mm connector, mono output
• Microphone input: 8-pin, can be configured to be compatible with electret microphones.
• Antenna connector: SL-16 type (M or SO-239 type equivalent), rear panel mount.
Controls:
• IF Gain Control: act as volume control
• Tune Control
Documentations:
• Quick Guide: English, Spanish and Japanese
• Full Manual: English, Spanish and Japanese
• Part List: English, Spanish and Japanese
• Drilling Template: No text, only drawing

Price List and Payment:
Kit: 115 USD, Assembled Kit 155 USD, Optional microphone 20 USD. Air shipping and handling 15 USD each for Asia and 25 USD each for worldwide. We accept paypal rongxh@gmail.com.
Should you have any questions or inquiries, email us to rongxh@gmail.com or join and send post to http://groups.yahoo.com/group/CHINA_QRP.


New Mini Iambic key vy I1QOD

Technical data:
New Mini Iambic key
Materials used: Brass for the body – Massive silver for the contacts
Highly polished inox steel for screws and registers
Dimensions: 70x58x15 mm; weight 0,700 kgs



Mini Iambic De Luxe


Mini Iambic Chrome

Other:
Transparent coating against corrosion
For any further information please contact by E-mail: i1qod@inwind.it


RigExpert AA-1000 - Antenna Analyzer (0.1 to 1000 MHz)

Easy-to use measurement modes, as well as additional features such as connection to a personal computer make RigExpert AA-1000 attractive for professionals and hobbyists.
The following tasks are easily accomplished by using this analyzer:
  • Rapid check-out of an antenna
  • Tuning an antenna to resonance
  • Antenna SWR and impedance measurement and comparison before and after specific event (rain, hurricane, etc.)
  • Making coaxial lines or measuring their parameters
  • Cable testing and fault location
  • Measuring capacitance or inductance of reactive loads
Downloads:


jueves, 23 de febrero de 2012

Videos charla Propagacion EA5DY

Ya esta disponible en la Web del Radio Club Henares 
http://www.radioclubhenares.org/charla-sobre-propagacion-por-ea5dy/ ) 
los videos y fotos de la charla sobre propagación que impartió 
Salvador EA5DY el pasado 11 de febrero. 

Nuevo diseño Antenna Dinamica

El nuevo diseño de AntennaDinamica que pronto lanzaran al mercado.

Se trata de una antena con elementos dinámicos (tipo Steppir) pero notablemente mejorada.
En este caso son 3 elementos de 10 a 20, 2 elementos en 30 metros y un elemento en 40.
No hay datos de momento sobre precio.

Mas info en su sitio web: http://www.antennadinamica.com/




Nuevo LDG - AT-1000ProII


·         High Power Microprocessor controlled Switched L tuning network
·         Two position antenna switch with 2000 memories for each position.
·         Adjustable threshold for Auto mode
·         Continuous coverage 1.8 to 54 MHz
·         Power rating HF (1.8 to 30 MHz):
-         1000 Watts Single Side Band
-         750 Watts CW
-         500 Watts Digital (RTTY, Packet, etc)
·         6 meters: 250 Watts (any mode)
·         Capacitor / Inductor fine tune controls
·         Tuning time: 0.2 recall, 10 seconds average, 30 seconds max
·         Tuning impedance: 6 to 1000 Ohms (approximately  10:1 SWR)
Dual meter scale 100/1000 watts and SWR
·         Tuning power: 5 to 125 watts maximum
·         Relay protection software prevents tuning when RF power is high
·         LED indicators for Ant and Bypass.
·         Optional External 4.5” analog, LED backlit Meter
·         Includes 6 foot power cable 5.5 x 2.5 mm
·         Power requirements: 11 to 15 volts DC @ 1 Amp (user supplies power source)
·         Enclosure sizes: 10W x 11D x 3H (in inches)
·         Weight: 5.0 pounds

Suggested Retail Prices
AT-1000ProII Autotuner         $539.99
Optional M-1000 Analog Meter  $129.99


Mas info en http://www.ldgelectronics.com/c/252/products/17/67/1





Rohde&Schwarz EB 510 HF Monitoring RX

R&S®EB510 HF Monitoring Receiver Front View


  • Digital direct conversion receiver from 9 kHz to 32 MHz
  • Realtime IF spectrum up to 32 MHz and parallel demodulation with bandwidths from 100 Hz to 5 MHz
  • Fast panorama scan with up to 60 GHz/s across the entire frequency range
  • High-speed frequency and memory scan with up to 1600 channels/s
  • Polychrome IF spectrum for reliable detection of pulsed signals
  • Spectrum and spectrogram (waterfall) display on receiver (model .03) or on PC via the R&S®EB510-Control software (both model .02 and model .03)
  • AM, FM, I/Q, AM2, FM2, I/Q2 video panorama
  • 1 Gbit LAN interface for remote control and data output
  • Comparatively low power consumption for efficient DC operation, e.g. on a vehicle battery
  • Space-saving system integration due to ½ 19" width and three height units
  • Classification and analysis of signals up to 5 MHz bandwidth (analog and digital modulation) through evaluation of the I/Q data stream using the R&S®GX430IS software (in offline mode)

K3 Elecraft – 160 – 2 m* - 100-W High Performance All-Mode Transceiver


Elecraft’s state-of-the-art K3 transceiver offers a unique combination of ultra-high performance and affordability.
Both 100-watt and 10-watt (upgradeable) models are available. starting at just $1949 for the K3/100 (no-soldering kit; also available fully assembled and tested), the K3 is comparable in both features and performance to transceivers listing at up to six times its price.
In a first for the industry, the K3’s identical main receiver and subreceiver each feature a high-dynamic-range, down-conversion analog architecture. This allows Elecraft to provide roofing filters with bandwidths as narrow as 200 Hz, while up-conversion designs have roofing filters typically 3,000 to 15,000 Hz in width. Unlike some competing down-conversion designs, the K3 also provides 6-meter coverage, as well as continuous tuning from 0.5 to 30 MHz. Each receiver has its own bus-switching mixer, narrow ham-band front-end filters, 32-bit I.F. DSP, low-noise synthesizer, and up to five crystal roofing filters.
Both fixed- and variable-bandwidth crystal filters are available.The variable filters are available in both data/CW and voice-mode bandwidths, and allow close tracking between crystal and DSP filtering — a feature not available on any other rig at any price.
The K3 is the only deluxe transceiver that is targeted at both home and field use. Weighing just 8 pounds and having dimensions of 4” x 10” x 10” HWD (10 x 25 x 25 cm), it’s well-suited to demanding DXpedition or Field Day operations. Its receive-mode current drain of less than 1 amp greatly facilitates battery or solar-powered mobile/RV/marine installations. But unlike smaller portable transceivers, the K3’s user interface is optimized for ease of use, and its feature set rivals units many times its size and weight.

CQRLog - Linux logging program












Windows and Mac have plenty of ham radio applications to be used under their operating systems, but what about Linux users? The following is an interview with Petr, OK2CQR, the developer of CQRLog, the logging program for Linux users.
Tell us something about yourself and how you came to know the ham radio community.
I’m 30 years old, live in Neratovice, Czech republic with lovely wife and three children. My father was a SWL so I’ve heard about ham radio since my childhood. My own ham radio career started when I was 11 and got SWL number and begin to listen on HF with our surplus navy tube receiver. It was very exciting. When I was 16, I passed exams and got call sign OK2CQR. I love CW so you can find me mostly on CW part of bands.
When did you first approach Open Source and Linux?
I learned about Linux in 1997 when I was at high school. But it was not so interesting for me. About 4 years later, I found RedHat 7.0 in book store and bought it. It was my the first used Linux system but in dual-boot only. Later had RedHat 7.3, Mandrake, Slackware, ArchLinux and finally in 2007 discovered Ubuntu. It became primary system on my laptop very quickly. The first Linux distribution where everything was working out of the box.
Which projects are you currently involved with?
I’m one of developers of Linux logging program called CQRLOG www.cqrlog.com ) , owner of free online ham radio callbook called HamQTH www.hamqth.com ), maintainer of our local HF contest called KVPA, etc. I have many activities but mostly around the radio.
Tell us something about CQR Log, how did it come to be?
I started to work on CQRLOG in 2001. It was only for Windows and in Czech language. Program was very popular in our country. In 2007 I moved to Linux, abandoned Windows version and started to work on Linux version because didn’t find any suitable logging program for me. My friend Martin, OK1RR joined me and we are developing CQRLOG together. Our program has many users world wide and I think, it is the best logging program in Linux world.
What do you think about the relationship between Linux, Open Source and ham radio?
I think Linux is very close to ham radio. We are not ordinary people who just turn something on and don’t care how it works. If we can build our own equipment, we can build our own operating system as well. Linux distributions are open, so we don’t need any permission to explore it into depth, we can modify it to meet our needs. We can share information about what we do and help each other. (Do you know that one of the core Linux developers is ham radio operator? Yes, it is Alan Cox, GW4PTS)
Do you think that under Linux some ham radio applications are lacking? Will you be starting any new projects soon?
We have good logging programs, excellent program for digi modes (fldigi), software for satellite tracking etc (all the mentioned programs can be found at: http://radio.linux.org.au/ ). What we need now, is good contest software. We have tlf, xfktest but we need something like N1MM for Windows. Easy to use, good looking and powerful contest logging software. I don’t spend so much time in contests so I use tlf but I have to compile it from source code. It is not so comfortable. I was thinking about contest software similar to CQRLOG, even started to work on it but didn’t finish it. It is a lot of work and I’m very busy with my current activities. Maybe later.

Nueva UB-40 MX de UltraBeam

There is no other Yagi design capable of reducing the dimensions of the UB-40 MX any further without inevitable losses in terms of forward gain and F/B ratio.

The UB-40 MX has been especially dedicated to those Hams who have always dreamed of a dynamic antenna operating with at least two elements on the 40 meter-band, but with reduced dimensions than those of the bigger full-size “sisters” which, space restrictions, very often do not permit to install.