Gerhard,
As given in ARRL laboratory expanded test report:
1. Spectral purity:
* 91B worst case: 52dBc@14MHz@1500W
* AL-800H worst case: 45dBc@28MHz@1500W
2. Transmit two-tone IMD test @14MHz
* 91B 1500W: 42dB third order; 45db fifth order
1000W: 38dB third order; 63dB fifth order
750W: 40dB third order; 56dB fifth order
* AL-800H 1500W: 42dB third order; 49dB fifth order
1000W: 43dB third order; 58dB fifth order
750W: 45dB third order; 55db fifth order
See also the product review of these amplifiers in september
issue of QST where AL-800H, 91B and HF-2500DX were
compared.
As a personal remark, I feel that ( like in few postings before )
Commander HF-2500 is a better option in this price class.
73 de Morel, 4X1AD
> >> From: Gerhard Burian <gburian@eunet.at>
> >> To: amps@contesting.com
> >> Subject: [AMPS] AL800HX vs, ETO91B
To: <amps@contesting.com>
> >> Date: Sunday, November 30, 1997 12:35 AM
> >>
> >> Hi specialists,
> >> my friends at the clubstation OE5XVL want to get some more power
> output
> >and
> >> have taken the amplifiers AL800HX or ETO91B under a closer look.
> Any pros
> >> and contras are welcome, specially about yes or now on the russian
> tubes
> >> they use in the ETO91B.
> >> Thanks in advance
> >>
> >> Gerhard BURIAN OE3GBB
> >> A-2620 Wartmannstetten 172
> >> Austria
> >> Tel. +43 2635 65813
> >> Fax. +43 2635 61840
> >> mail: gburian@eunet.at
> >>
> >>
>
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