IR4B is  IK4AUY Special Contest Call
  Contest page UNDER CONSTRUCTION

                          My Sunrise - Sunset local time (for low bands grey line propagation)   

Click for Bologna, Italy Forecast


My amateur radio station is composed by:

set-up a)    and   set-up b)

set-up a):

HF antennas:  10-15-20 meters  one Hy-Gain TH7 up about 17 meters from ground, top of  home roof.

                     12-17-30 meters  one rotative dipole by Cushcraft D3W below (because we have added it
                     only lately and it was difficult to add it above the TH7)  at 90° (to minimize
                     mutual pick-up with the three bands yagi)

                          40-80 meters  one mor-gain dipole, 20 meter long with 3 closed spaced wires and center 
                     fed with coaxial cable, for limited space)

VHF antenna:  144 Mhz  5 el short yagi by Fracarro mounted top of TH7 at  18 meters from ground.

set-up b)  - at country qth, flat area:

HF antennas:  10-12-15-17-20-30-40  one vertical antenna  by Cushcraft R7, at 2 meters from ground.

                     40-80-160 one vertical Butternut HF2V antenna heavily toploaded with 4 equal length 
                     sloping wires, each  about 5 meters long, ground mounted with 5,  20 meters long, radials.
                    
Rx only antenna: 40-80-160 with one direction only Beverage about 177 meters long, at 2 meters from
                         ground.  

I use our own designed
SRC-02 Front-End unit (with passive RX passband filters, pre-ampl, variable attenuator and ant 1, ant2, RX antenna only switching control).

RIGs:              Kenwood TS570DG <<<click here for LX3SKY review, and audio files in page 2 DSP)
                       I4FAF home built trx (as back-up rig, second receiver only)

Amplifier:        One, home built by I4FAF,  4CX800A tetrode tube linear amplifier for HF bands, legal 
                      limit power 500 Watts,  only  if necessary.         

PC:                 Pentium lap top for real time logging with CT9  by K1EA

CW Paddles:    Begali Simplex, Bencher.

Wattmeters:     Coaxial Dynamics 83000-A, Drake WH7.
 

(last update: 21 Jan 2004)