Author: ms

The good old days – history of SP5KOH, SP5ZHM, SP5KTD radio clubs

>>>>>Updated on 2019-06-18 by SP5GNI<<<<< The HF5L amateur club refers to the legacy of SP5KOH, SP5ZHM,  SP5KTD radio clubs that have not existed for many years, as well as SP5ZDF, SP5ZCA. Established in 2017, the HF5L club is a meeting place for former members of those clubs, but also a place for new people interested […]

Wireless antenna switching

Automatic antenna switching is a convenience and safer operation of the equipment, but it does not solve all the nuisances. If the antenna switch is located in the radio room, then a separate fider should be derived from each antenna, which does not have a very favorable effect on costs and aesthetics (not to mention […]

Automatic antenna switching in Yaesu transceivers

Automatic antenna switching is not only convenience, but also safer operation of the equipment. Yeasu transceivers are equipped with a socket on which BCD signals represent the currently selected band. The truth table for the TUN/LIN connector in FT-991 is below: D (pin 7) C (pin 6) B (pin 5) A (pin 4) Dec value […]

What is Hamsphere

The Hamsphere program is celebrating its 10th anniversary. Its originator and owner, Kelly (SM7NHC and 5B4IT), claims that it is not a typical “talk”, VOIP which are already several on the Internet, but a real radio program for hams, only in the Internet, with all the attributes of a real radio . We have there […]

HF5L/p in IARU CW R1 Fieldday 2018 contest

Updated on 2019-06-18 by SP5GNI Field work of ham radio is an attractive form of action within our hobby. For stations slashed by “p” and “m”, the Fieldday competition formula assumes a number of restrictions, such as non-stationary work without using mains power, distance from the nearest buildings and power lines greater than 100 m, […]

Fieldday 2018 preparations

On 2-3 June 2018 we will operate from a forest near Skierniewice, Poland, under the callsign HF5L/p. On May 19 there was a general rehearsal before leaving at the headquarters of the HF5L club. We invite everyone to participate in the competition and for QSOs with HF5L/p on all 6 bands! Rules of the 2018 […]

More about the rotating antenna by SP5GNI

The article “GNI-r3 rotor antenna rotor controller” describes my simplest structure. The user’s manual is available here. I also mention the extended version – the manual is also available. In fact, I have checked other concepts of rotor control. My first idea was to control the rotor completely wirelessly. Impossible? And yet. After all, the […]

CQ WPX SSB Contest 2018

On March 24-25, we took part in the CQ WPX SSB Contest in the Multi-Operator Single-Transmitter Low-Power category. We used IC-765, we made 304 QSO’s. Operators: Andrzej SP5DDF, Wojtek SP5DPD, Zygi SP5ELA, Mirek SP5GNI, Marek SP5ISZ, Marek SP5IXS and Piotr SQ5JUP. According to preliminary results, we obtained 143584 points and: 48th place WW, 22th place […]

GNI-r3 antenna rotor controller

In issue 3/2018 of the Świat Radio monthly, I published an article about my controller design for popular RAU and RAK antenna rotors. Below is a short version of this publication along with a slightly modified scheme. The GNI-r3 controller supports one rotator. Antenna rotation is possible in the range of 0-360 degrees with reserve […]