Labels:paper | quadrangular prism | sky OCR: TWINLEAD (A) 60 mA BULBS TWINLEAD (B) 60 mA BULBS Figure 1. Balanced Line SWR indicator. (A) This post WWI open wire line indicator shows low SWR when the bulb towards the transmitter bright as compared to the one towards the load. Dimension shown and bulb types suitable for transmitter of 50 -100 watts output. Sensitivity adjusted by the spacing from the main line. (B) Coax version of (A). WWII
