IK1ZYW Labs

Living far away from those Countries that use(d) the FM OIRT band (65.8-74 MHz), it is hard to tell if it is still used nowadays. But with t...

Thanks to some amazing Es openings last July 2014, my 5W and Moxon beam allowed me to reach 7 DXCC (I, G, GM, ES, 9A, OH, YO) and 8 differen...

The day after Italian HAMs were allowed to use 70 MHz band again for a few months in 2014, I reconnected my transverter and erected the dipo...

I like the compact design of Moxon 2-element directional antennas, even if they are harder to build than a normal Yagi. Given the fact that ...

Without a correspondant to try a QSO on the air, I had to test my 70 MHz transverter output with my own equipment. First of all I used the...

Fortunately it took little effort to tame the self-oscillation in the (PA?) 10-to-4 transverter. First troubleshooting action was decoupling...

The Ukrainian 4m transverter has been installed into the final box, including IF relay and A*duino sequencer. The container is a repurposed ...

E ven if not explicitly mentioned, I decided my 70 MHz transverter needs a switching sequencer. Any existing solution I could find online us...

In a careful hurry I checked the 4 m transverter if it is suitable for SSB traffic. Since it must be driven with 100 mW, a 7 dB attenuato...

I found no mention online about current draw of the Ukrainian 29/70 transverter: my specimen drains about 24 mA at 12V in reception . Mor...

T he "ten to four metres" transverter has arrived from Ukraine. The very first impression is that it is indeed SMALL ! A picture-t...

W hile searching online for parts for a 70>23 cm tripler I came across an auction for a 10m to 4m transverter board . Just the fully asse...

The picture shows my TX-only transverter with the diode ring mixer (SBL-1 or ADE-1) component added. The circuit has not grown a lot, but it...

While I have no news about a possible 4m allocation for Italy in the next months, I have started working on my TX-only transverter - a ...

... Italy will get again a 70 MHz (4m) allocation in 2010. I need to build an antenna again! And maybe a power amplifier for my 100mW CW TX....

Last Sunday I managed to take part for a couple of hours in the "70 MHz and Cross-Band Contest 2008" promoted by ARI Roma. I was i...

Segnalo la mia possibile attività domenica 15 giugno 2008 mattina, in occasione del "70 MHz & cross-band Contest" promosso dal...

Il primo QSO o qualcosa del genere, ieri sera 05/06/2008 a 70304 kHz alle 20UTC circa, cross-mode CW/SSB. Avevo modificato la configurazione...

Giusto il tempo di programmare il keyer, avvisare Adriano NAI ed ecco il primo rapporto di ascolto del mio trasmettitore in 4 metri. A 35km ...

Italian HAMs got a new authorization to use small portions of 70 MHz until 31/12/2008. The TX was already completed, now I needed the antenn...