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Reviews For: Tesla KVZ 1 AP

Category: Amplifiers: RF Power - HF & HF+6M

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Review Summary For : Tesla KVZ 1 AP
Reviews: 1MSRP: 3900 US$
Description:
Full legal limit 160 to 10 meters HAM bands QSK amplifier with 2 x 3-500Z. Separate power supply. Made in the 1990s in former Tesla plant Vimperk/Bohemia. Designed for continuous duty.
Product is not in production
More Info: https://www.radiomuseum.org/r/tesla_vaccum_qsk_hf_amplifier_kvz_1_ap.html
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
0014
DL9BDM Rating: 2022-09-02
Built like a tank! Time Owned: more than 12 months.
This also in Europe used very rarely offered power amplifier (because only a few were built in the mid/late 1990s) I could acquire one by a fortunate coincidence in mint condition few years ago. The workmanship is more comparable to military stuff than amateur equipment. All critical components are oversized several times. Power amp and separate power supply weigh over 30 kg (abt. 66 lbs) each. I think this speaks for themselves.

The anode voltage is over 3 KV at load. So the two 3-500Z tubes are operated according to their parameters and with good tuning the amplifier also creates up to 2 KW output without collapsing.

The only things that bothers me is the very loud fan, which makes it necessary to use headphones in the shack and the enormous footprint due to the size, which takes up a lot of space. Only because of this I deduct one star from the otherwise deserved five stars in the rating.