S-meter with a range of 120 dB. Reliability of indications of S-meters in KV range - old and, it seems, - an eternal subject. Who wants to have, nevertheless, S-meter which would show actual levels, since 1... 2 points, that has to use to his work the separate receiver with own characteristic. The similar S-meter with the intensifying scheme with a range from - 110 dBm (0,01 пВт) up to +10 dBm (10 MW) can be executed on only two IMS...
Output KV 5, 10, 15 and 25 KW cascades. Rather popular design on two connected in parallel, modern ceramic-metal tetrodes of GU-78B, is constructed according to the scheme with the general cathode and provides the output power of 5-6 KW., at a tension on the anode 3 Quarter and current 3-4 A. The cascade works for all KV ranges with uniform return and high stability. For excitement of the cascade of rather small power. For food of an anode chain it is enough two connected in parallel the transformer from R-140 with small completion. Alexander Rogov (RZ3AH).
The preselector on strip filters. Production of this preselector demands certain technical skills and if you have decided on it, I hope, my modest experiment on performance of concrete products in addition to yours and the available information in technical literature and the Internet will help to make a right choice. V. Zhurbenko (US4EQ).
Synthesizer on ADF4360-7 in the range of 23 cm. Article is intended for those who were engaged in designing in the range of 23 cm and doesn't know what to begin with. In a radio amateur workshop the generator which is quickly reconstructed on frequency won't prevent. For example, for control of entrance chains of the converter, radio station, or as the indicator. ADF4360-7: The integrated synthesizer with integer coefficient of division and GUN with a range of the output frequencies of 350 - 1800 MHz. Sergey (RX6AQD).