[1000mp] Another kind of mod - k9an
Gian Luca Cazzola
[email protected]
Fri, 3 Jan 2003 18:29:21 -0000
Data about K9AN modifications (thanks George Cutzogeorge)
from my e-mail 2000 on this reflector:
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Some days ago I finally tried the K9AN modification suggested to me by
George W2VJN (INRAD) long time ago.
-My FT1000MP, s.n. 7G....., had as C3015 capacitor on the audio board a
0.015 uf. I have soldered parallel a mylar cap 0,047uf (now total 0.062uf).
-I have measured MDS with my old but performing lab:
LOGIMETRICS 925-S125 rf signal generator
Alan high precision step attenuator 0-100db
HEWLETT PACKARD 3400A true rms audio voltmeter.
-Rig setting 14,200-cw-AGC off- 500hz filters
menu 9-1 setting 12.
MDS- minimum discernible signal measured:
before modification was -137dBm
after modification is -141dBm
Really a 4dBm improvement in CW MDS with only a capacitor soldered is a big
improvement.
I also confirm that listening the 1000MP after the modification is a lot
more ears relaxing than before.
Many many thanks George W2VJN for the info and the capacitor-hi!, and
thanks K9AN!
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Ian IK4EWX
(FT1000MP with Inrad 400hz/8,2Mhz+400hz/455khz - wonderful pair)