Παρασκευή, 14 Αυγούστου 2015

PSKMail

Introduction

How much bandwidth does the mobile ham really need?

Like most questions, there are several answers to this. The best one probably being “it depends on your lifestyle”. If you are used to broadband internet access and don’t want to give that up when you are en route, you are a potential candidate for internet access via satellite, and you will have to bear the cost of that luxury. If on the other hand you are en route to relax, and you don’t need instant information, you could try PSKmail for bare bones information delivery. Pskmail gives you a 500 Hz wide channel to the internet. This is enough to get the most important email, the weather forecast and the daily update on the sunspots. Being nomadic, we live on a boat during summer and in a camper during winter, I get by with 200 Hz and a half hour session with the server most of the time. How much email do you really need daily to keep up to date?
Of course we combine daily PSKmail with a webmail session once a week, to get the ‘picture ‘ if you know what I mean. And to get the non-ham stuff.
But I can upload software patches to the internet on a daily basis while living on a Mediterranean beach which does not have a ADSL socket.

MORE INFO:  http://pskmail.org/

Τρίτη, 7 Ιουλίου 2015

Big Wheel Antenna for 2m, 70cm and 6m

The “Big Wheel” is a horizontal polarized omni directional antenna. Usually highly directional antennas are used on VHF and UHF, which have the capability to bundle the radiated energy in one direction and eliminate interferences from unwanted directions. But these effects are not always welcome. With directional antennas it is nearly impossible to monitor a frequency for signals from any direction. Usually the directional antenna stays in the direction where the most signals are expected from and some rare contact in an other direction is lost. In such cases the Big Wheel is an ideal antenna which should be used together with a directional antenna.
Big Wheel antennas by WiMo are made of stainless aluminum, all other hardware is made of stainless steel. The antenna gain is approx. 3dBD, each Big Wheel has a N-jack (female). By vertical stacking of two Big Wheels you get a gain of approx. 5dBD. To connect two antennas to one coax feed a usual phasing harness can be used.

More Info: http://www.wimo.de/big-wheel-antennas_e.html

Σάββατο, 6 Ιουνίου 2015

PJ4VHF Listen D4C/B

The new D4C 2m beacon was received on Tropo for several hours in the Caribbean by PJ4VHF Dave on Bonaire on almost 4700km path. The band was open for 90 minutes from 0100-0230 UTC May 6, 2015. Report 519 on a TS-2000 with 2 x 13 element yagis.


INFO: https://www.facebook.com/D4C.STATION , http://qrznow.com/