Archivo de la etiqueta: VHF

ARRL busca opiniones sobre una posible nueva licencia de entrada

​El Comité de Licencia de Nivel de Entrada fue establecido por la Junta Directiva de ARRL y designado en septiembre de 2016. Como parte de su trabajo en curso, el comité está recopilando los comentarios de los miembros y hará recomendaciones a la Junta para posibles cambios de reglas para presentar a la FCC.

El resultado podría significar cambios en la licencia Technician, pero también podría ser una licencia adicional, pero más simple, con privilegios que le darían a un recién llegado el sabor de la mayoría de las facetas del radioaficionado de HF a VHF y UHF.
El comité ha creado una encuesta en línea de los miembros. Por favor complete y envíe la encuesta a más tardar el 7 de abril de 2017. Los resultados de la encuesta serán publicados.

Solar Cycle Prediction

May 5, 2016 at 10:56AM

Author: Dr. David H. Hathaway

The current prediction for Sunspot Cycle 24 gives a smoothed sunspot number V2.0 maximum of about 101 in late 2013. The smoothed sunspot number V2.0 reached a peak of 116.4 in April 2014. This will probably become the official maximum. This second peak surpassed the level of the first peak (98.3 in March 2012). Many cycles are double peaked but this is the first in which the second peak in sunspot number was larger than the first. We are currently over seven years into Cycle 24. The current predicted and observed size makes this the smallest sunspot cycle since Cycle 14, which had a maximum smoothed sunspot number V2.0 of 107.2 in February of 1906.
Predicting the behavior of a sunspot cycle is fairly reliable once the cycle is well underway (about 3 years after the minimum in sunspot number occurs [see Hathaway, Wilson, and Reichmann Solar Physics; 151, 177 (1994)]). Prior to that time the predictions are less reliable but nonetheless equally as important. Planning for satellite orbits and space missions often require knowledge of solar activity levels years in advance….READ MORE






April 28, 2015
TYT TH-9000D – VHF

TYT TH-9000D – VHF

March 29, 2016

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Nuevos equipos para los voluntarios de Alba de Tormes

May 04, 2016 at 08:26AM

Entre otro material recibieron un par de transmisores de VHF
Igualmente, los integrantes de la Agrupación de Voluntarios recibieron linternas, ropa de abrigo, conos y cintas de señalización, gorras y botas.

EAntenna Systems Now Available at DX Engineering

May 03, 2016 at 03:36PM
Contesters have been clamoring for rugged, high performance antennas that won’t break the bank. EAntenna’s Yagi and dipole antenna designs deliver on all three fronts. These HF and VHF antennas can be found at some of Europe’s most competitive stations, and now operators in the United States can purchase them for their own installations. EAntenna’s […]

(T8A09) FM Bandwidth

May 01, 2016 at 04:05PM

T8A09 from the Technician License Course Section 6.3, Bandwidth and Sidebands:
What is the approximate bandwidth of a VHF repeater FM phone signal?

A.  Less than 500 Hz
B.  About 150 kHz
C.  Between … Read More

The post (T8A09) FM Bandwidth appeared first on Ham Radio

VHF and UHF FM Transceiver MT-777

April 19, 2016 at 12:03PM
Application   For on-site communications such as warehouse, manufacturing, hospitality, school and security occasion, etc.   Main Features   ■ 50 CTCSS tones/105 DCS codes ■ 128 channels to store ■ Wide frequency range    UHF: 400-470MHz / VHF: 136-174MHz ■ Channel spacing: 25 / 12.5KHz ■ 1750Hz tone for repeaters ■ SOS emergency function […]

The Joys Of HF

April 01, 2016 at 01:52PM
It seems that contesting clubs in Manitoba and New England want to show non-hams, new hams and all hams, the ‘joys of HF radio’. In a beta test of their idea, called ‘Discover the HF Experience‘, participants in Manitoba will have the opportunity to get on HF by operating K1K, in Massachusetts, remotely, from the Garden City Canada Inn located in Winnipeg, Manitoba, on Saturday, April 2nd.

Future events will take place in Massachusetts from the Yankee Clipper Contest Club’s venue on April 10th and a much larger operation, featuring four operating positions at Dayton in May, at the ARRL’s Expo site. Full details of all operations can be found here.

The idea was the brainchild of Gerry Hull, W1VE who, along with Cary Rubenfeld, VE4EA, has brought his idea to life.

“Our amateur population is at an all-time high, but most new hams are getting a Technician ticket, getting on VHF and UHF, and hanging out with like-minded friends,” Hull said. The limitations on what Technician licensees can do often leads to boredom, Hull said, “and they drop out of the hobby. They never get the exposure to HF ham radio, and as any veteran radio amateur can tell you, that’s a lifelong exploration.”

Now I fully concur that far too many of our newest amateurs land on VHF or UHF and never move, almost totally unaware of what HF radio is all about. Being exposed to HF radio is a great idea, yet … and maybe I’m just old-fashioned, but I’m not sure that this ‘first experience’ is best done via remote operation. From my own initial exposure to ham radio, seeing the magic happen in a basement or attic radio shack, complete with glowing dials and a wall full of QSL’s from all over the world, was enough to hook me for life. I’m pretty sure that same feeling can’t be conveyed by sitting in front of a laptop and pushing a few keys.

I am not a fan of ‘remotes’ but from what I have seen, this may be one of the better examples and if it grabs and convinces even a few to explore HF on their own, that would be a good thing … then all we’d have to do is get them on CW !

Yaesu FTM-3200DE, a la venta este verano

April 01, 2016 at 12:53PM

Es un monobanda VHF con sistema digital y 65 vatios de potencia
Es un equipo especialmente concebido para su uso en móvil, de hecho lleva altavoz frontal. Como los últimos Yaesu digitales, incorpora el sistema Automatic Mode Switching, con el que el aparato reconoce si la señal que recibe es analógica o digital para cambiar automáticamente de modo.