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Icad iFig. 1A»; remoce rł»e vibrntor «md bridge ihr eonnortion as shown in Fig. II?. The 6.3-voll a.c. 1 ransformer should bc Citjwildc ol supplying ai least 10 amporcs.

MetliOil Tico: llcmooe the vilmuor and vibralor trnnsformer. Ncxt. install a standard powor iranslormcr. ursi.ig the rt..H-volt winding tor tlic lica tors and Hic high-wdtagc winding for “R+.” as indicatcd in Fig. 2. Don'f foiget Ilia! if tlu* radio nscs an OZ-I. rlio \oltagc oach sido ol tlić cciii er tup musi bo al loast 215 volls r.m.s.

Operałion

In order to gef the l>est performance. a tuned antenna should l>e tised. Tliis is cusily accomplishcd łiy using a standard auto antenna or hv loading a shoit whip antenna willi a sliunt capaciior, as shown in Fig. 3. Nor-mally. short lead-in cahlos have a capacitance ot appro.\imalely 40 wfti.

Capacitors C, and C- may be remewed for a.c. operation. II bum is a problem, capaciior C.. may be added. as shown in Figs. 11? and 2.

Onec an idea ol how easy it is to adapt these car radios silfs through. there should l>c a rush to pick up “junked” auto sets. In almost all in-sranccs. the smali amoimt ol timc and

A

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