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Vi blev ikke længe ved Cajon Pass, for lørdagen var afsat til at mødes med Barry Draper, en signalinteresseret modeljernbanemand, som jeg kendte fra email. Barry havde ugen før holdt et foredrag med demonstration om togdetektering i model, og demoen er her. Togdetekteringen er en blanding af traditionel strømmåling og af infrarød reflektion. Ideen er at lave et pålideligt bloksystem uden behov for at skulle modificere materiellet. Det virkede ganske overbevisende... Sjovt hvor længe man kan stå og se et lille tog trille frrem og tilbage mens signalerne skifter :-)

We didn't stay long in Cajon Pass as we were headed to meet BArry Draper, a model railroader with a great signal interest that I'd met through email. The week before Barry had held an NMRA clinic about train detection on model railroads, and this is the demo. Train detection is via usual current detection combined with infrared reflection. The idea is to build a dependable train detection wuthout the need to modify the rolling stock. The demo was quite convincing... Funny how long you can stand and watch the train roll back and forth while the signals change :-)