DX4WIN. HamWorld. THE BOX: PORTABLE EMERGENCY COMMUNICATIONS STATION IDEAS. THE BOX: PORTABLE EMERGENCY COMMUNICATIONS STATION IDEAS Jan. 9th, 2002, By Steve KB1DIG & Kim KB1GTR Time for Plan B!
This is a spin-off of the Go Kit project. Intended for portable long-term usage and also good for Field Day Events. Something requiring a little more power output than the HTs. A diamond in the rough. This "Box" is going to be under constant refinements this year with your suggestions and comments. Please understand, this page is not intended as an official blueprint on how to build something like this. What started this whole thing. If you build a "Box" like this remember that refinement is the mother of invention. This "Box" is something like the one Kim and I were using when we went to help out at Ground Zero. Still, this project came out good for just having fun!
The 12 volt power connection is as simple a possible. Keep in mind that you need to be able to set this up and take it down super quick. World-Wide Callsign Database. Wouxun Radios, Crimp Tools, Power Supplies & Power Poles for Sale. Navy Mars HP Frames. Grey Line Map. The "grey line" is a band around the Earth that separates daylight from darkness.
Propagation along the grey line is very efficient. One major reason for this is that the D layer, which absorbs HF signals, disappears rapidly on the sunset side of the grey line, and it has not yet built upon the sunrise side. Ham radio operators and shortwave listeners can optimize long distance communications to various areas of the world by monitoring this band as it moves around the globe. Sota Watch 2. K8ZT's Ham Radio Resources- QRP, DX, Logging, Contesting & Ham Radio. By Gabriel - EA6VQ. Ham Radio DXpedition, Calling & Simplex Frequencies.
CALLING FREQUENCIES -- Courtesy of Rob Bellville and the Lincoln Amateur Radio Club 2M CW......... 144.100 MHz 2M QRP CW Calling Freq ----144.060 2M PSK ........ 144.144 to 144.150 2M SSB........ 144.200 MHz 2M QRP SSB Calling Freq ---- 144.285 2M FM......... 146.520 MHz (National Simplex Freq) 1.25M PSK .... 222.07 to 222.15 1.25M CW..... 222.100 MHz 1.25M SSB.... 222.100 MHz 1.25M FM..... 223.500 MHz 70cm SSB...... 432.100 MHz 70cm PSK ..... 432.2 and up 70cm FM....... 446.000 MHz 33cm CW/SSB.. 903.100 MHz 33cm FM...... 906.500 MHz 23cm FM...... 1294.500 MHz 23cm CW/SSB..1296.100 MHz 13cm CW/SSB..2304.100 MHz From the JPLARC in Southern California.
HamTestOnline - Ham Radio Exam Courses and Practice Tests. Callsign Database by QRZ.COM. Hrd Log. The Electronic QSL Card Centre. DX cluster - dxwatch.com. The RST Reporting System for Ham Radio Reception Reports. Station. Enter - Power Density Calculator. Amateurs are required to perform a routine evaluation of the strength of the RF fields around their stations, subject to certain exemptions based on peak envelope power (PEP) levels at the various amateur bands.
However, the FCC regulations on permissible RF exposure are not based on peak envelope power (PEP), but on average power over a 30-minute time period for uncontrolled environments, or a 6-minute time period for controlled environments. The part of the regulations that determine whether a station operator must perform a periodic evaluation, however, is based on PEP. To estimate your average power, first start with your Peak Envelope Power (PEP). Multiply that by the duty factor for the mode you are using, then by the maximum percentage of time you expect to operate within the averaging period.
ARRL - The national association for AMATEUR RADIO. Washington Island's Ham Radio Treasure. This week we had the rare opportunity to visit the ham shack of George Ulm, W9EVT, and were treated to an experience that may well be unique in all of amateur radio.George has been active in ham radio since 1938.
Originally licensed as K1ABU, like all other hams he put the hobby on hold during World War II. After the war, he was granted the callsign W9EVT, which he holds to this day. In the 70+ years that George has been a ham, he has achieved a number of firsts in the hobby that many of us can only dream of. Some of his more notable achievements include building the first repeater system in Chicago, being the first person to hold a reciprocal callsign in Mexico, and having worked nearly every country in the DXCC list, including several that no longer exist. George's call sign can be found in the 1947 callbook and in every issue since printed. We're all hoping that a dedicated museum or preservation organization will step forward to take on the task. ARA'S HOME PAGE. Homepage. RadioReference.com - Scanner Frequencies and Radio Frequency Reference.
Main/Repeater Maps. Amateur Radio Repeater Directory. W6NEK HF Beacon Tracker Program Description.