[R-390] Alignment question

Sat, 11 Jan 2003 17:09:50 -0500

A google search for DA-121/u produces only three hits. The last is a thread 
from this reflector that shows how to build one. It consists of a 68 and a 
100 Ohm resistom and is used as an impedance transformer.

73
Glenn
WB4UIV

At 12:53 PM 1/11/03 -0500, Jim Brannigan wrote:
>Hello All,
>
>I changed the 3rd mixer back to a 6C4, checked the mechanical alignment and
>am now warming up the URM-25 and R-390A.
>
>For the RF alignment the manual refers to using an electrical dummy load, a
>DA-121/U.  This is not part of the URM-25 pack.  Is this necessary or should
>I just use a 50ohm load?
>
>If it is necessary, does anyone have the values used in the dummy load?
>
>Jim
>
>
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Glenn Little                         [email protected]   QCWA  LM 28417
Amateur Callsign:  WB4UIV            [email protected]   AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)   EC Berkeley County ARRL  TAPR
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