Sunday, July 28, 2013

La macchina del tempo (the time machine)

La mitica Yaesu FT209RH fu la mia prima radio, la acquistai di seconda mano nel 1985, fresco di licenza (all’epoca ero IK7GDP). La utilizzai tantissimo, prima in fonia (dirette e ponti), poi per il packet radio (chi se lo ricorda ?), finché nel 1994 un guasto irreparabile alla CPU mise fine ai giochi e la radio finì in discarica…

The FT209RH was my very first radio; I bought it in December 1985 when I got my ticket (at that time I was IK7GDP). I used it quite intensively for a few years: first on voice, on local direct and repeater frequencies; later, in 1988, for packet radio - a lot of fun. In 1994 it eventually developed a fault in the CPU module that I was not able to fix, so it was discarded.



The FT290RH open for repair

…avanti veloce ad alcuni mesi fa, quando l’amico Tony I0JX decise di donarmi (grazie !) la sua vecchia FT290RH che non usava più e che era finita in un cassetto. Per me è stato un vero salto nel passato! Dopo circa 30 anni di onorata carriera, la radio aveva bisogno di qualche attenzione ma io ero assolutamente determinato a sistemare tutti i piccoli acciacchi dell’età: con pazienza, in due settimane e lavorando nei ritagli di tempo, ho sostituito tutti i condensatori elettrolitici, i due potenziometri di volume e squelch (andati completamente) e ovviamente la batteria al litio di backup.

Fast forward.... few months ago a friend of mine (Tony I0JX) gave me his old FT209RH, that he wasn't using any longer and that had been sleeping in a drawer for the last few years. For me it was a jump in the past! After almost 30 years of life, the radio needed attention, but I was determined to fix it, no matter what! So I started working on it, and in a few weeks of part-time work I brought it back to its original "splendor"; I had to replace: both potentiometers (on/off-volume and squelch - they had gone bananas), all the electrolytic capacitors (they were leaking or dry) and the lithium back-up battery (flat, of course, after 27 years...).




Per quanto riguarda il pacco batterie, ho deciso di acquistarne uno nuovo su e-bay… si tratta di un pacco NiCd (!) da 1200 mAh, siglato FNB-4 come l’originale Yaesu ma più lungo, con l’inconveniente che la custodia in simil-pelle originale non è più utilizzabile… con pacco nuovo la radio è veramente lunga, quasi 21 cm (antenna esclusa)… molto anni ’80.

The FNB-4 battery pack was exhausted, so I decided to treat me to a brand new one (yes, I could have replaced the elements inside, but the pack itself was quite beaten-up... I kept it for future project). The pack that is available today is a NiCd (!) 12V, 1200 mAh, that is quite good; the only drawback is that it is longer than the original FNB-4, so the original protective case won't fit, and the radio is really loooong (almost 21 cm, without the antenna).... quite funny, it definitely looks vintage !

Naturalmente niente toni subaudio, neanche come opzione, quindi parecchi dei ponti attuali non sono accessibili… poco male, la mia “macchina del tempo” la uso per QSO in diretta dalla stazione fissa, connessa all’antenna esterna (una X50). Questa volta non lascerà lo shack !

Of course, no CTCSS (on the European version they were not even an option)... so a lot of repeaters are not accessible, but who cares... I am using it at home, for QSOs on local VHF frequencies, connected to my external antenna. This time I am going to keep it !



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