A good Australian supplier of rf attenuators is RF Devices, 9 Lyn Pde, Hxtn
Pk, NSW, 02 9607 8811, Fax 9607 3763.
For attenuators that you want, Lucas Weinschel, PO Box 6001, Gaithersburg,
MD 20884-6001 USA, 301-948-3434, fax 301-948-3625
Check out Bird. I _highly_ recommend their products. They sell
attenuators ranging from 5 w continuous to 4 kw continuous. We use their
25 watts series 8306 (5 kw peak for 5 microsec. max.). They are
available in 3, 6, 10, 20, and 30 db. Among other things, we use them
for our scope to look at the output of our rf amplifiers for CP/MAS. The
only time we've smoked one was when we tried shoving _LONG_ pulses (tens
of MILLIseconds) around 2kw into it. Several years ago, a student
overloaded one, it overheated and melted into the vinyl tile floor, but
it's still perfectly OK!!! Very robust, and excellent electronic
characteristics. vswr <= 1.25 dc to 4 GHz, atten. flat to 0.8 dB or
better from dc to 2 GHz.
Bird Electronics Corp.
30303 Aurora Road
Cleveland, OH 44139 USA
phone 216-248-1200
fax 216-248-5426
-- Gerry
---------------------------------------------------------------
Gerald A. Pearson INTERNET: gerald-pearson@uiowa.edu
Chem. Dept., Univ. of Iowa OFFICE: 319-335-1336
Iowa City, IA 52242-1219, USA LABS: -1332, -0073 FAX -1270
---------------------------------------------------------------
MR Resources also has attenuators available.