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Kenwood TS-515 Antique

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Kenwood TS-515 Antique

HF currents from the antenna are amplified in 6BZ6 after filtering and are mixed with an oscillator current (6AW8A) which is 8.895MHz higher than the initial in each band. This is followed by amplification of the resulting interference in 6AW8A, filtering and mixing in 6CB6 with VFO current (3SK22, 2SK19, two 2SC460). The frequency of the Received current is 3,895 MHz.

This is the second interference. First, it is filtered in one of two (optional three) electromechanical filters, and then amplified to 6BA6 where the signal required for the S-meter is obtained.

Kenwood TS-515 Rear Panel

Another 6BA6 is used to amplify and gain control AGC voltage. There is the end of a story with electronic tubes as the rest of the tasks are performed by transistors. 2SC733 is a buffer current amplifier (two 2SC460) that can oscillate at three frequencies between 3.3935 and 3.3965 MHz.

After demodulation in the AF Balance Detector, the current is amplified in 2SC458, 2SC733, 2SC734 and a pair of output transistors 2SD90 / 2SB473. I was surprised by the fact that the power boosted "> 1W" with errors that could be up to 10%. 

Main principle Superhet, double/triple conversion
Wave bands Wave Bands given in the notes.
Power type and voltage Powered by external power supply or a main unit.
Loudspeaker - For headphones or amp.
Power out 1 W (max.)
from Radiomuseum.org Model: TS-515 - Trio-Kenwood Electronic Inc.
Material Metal case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 330 x 195 x 355 mm / 13 x 7.7 x 14 inch
Notes Kennwood HF-Transceiver TS-515.
Frequency range: 80- to 10-m-HAM-bands; comes with the external power-supply PS-515 (with loudspeaker); Pout: 100 W.
Net weight (2.2 lb = 1 kg) 9.5 kg / 20 lb 14.8 oz (20.925 lb)
Price in first year of sale 2,330.00 SEK
Collectors' prices  
Source of data -- Original-techn. papers.
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