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DO9ST  > YAESU    19.02.05 15:53l 52 Lines 1361 Bytes #999 (0) @ EU
BID : J2FDB0FHN03V
Read: DG5YM DG8DG GUEST DK8NZ DO4CP OE5TUN DG9YIH DK7JY DG9VH DG8YHH DG5YMS
Read: DC9BM DC4RJ VE7HFY
Subj: PWR-Mod FT857
Path: DB0FHN
Sent: 050219/1453z @:DB0FHN.#BAY.DEU.EU [JN59NK Nuernberg] obcm1.06b48
From: DO9ST @ DB0FHN.#BAY.DEU.EU (Thomas)
To:   YAESU @ EU
Reply-To: DO9ST @ DB0LJ.#RPL.DEU.EU
X-Info: No login password


TX Power Mod for Yaesu FT857(D)  

Contact author:
Alex, HB9TSF, NH7VW 
 

WARNING: changing these will reset all the memories. 

Enter the Servicemenue. I want to warn you do not change these values unless 
you are sure of what you are doing. To get them turn transceiver off. Press 
and hold the A,B,C keys; while holding them in, press and hold in the [PWR] 
switch for 1/2 second to turn the tranceiver On. Now let go of all keys. 
Press F key to finish.

For this procedure you will need a Dummy Load (or a well matched Antenna) and 
a Wattmeter!

Locate Menue No

NO-024  HF1-PO-MAX  165 (set to 255) CW     1.800.00

NO-028  HF2-PO-MAX  159 (set to 255) CW     7.068.19

NO-032  HF3-PO-MAX  158 (set to 255) CW    21.225.13

NO-036  50M-PO-MAX  145 (set to 255) CW    50.000.00

NO-040  VHF-PO-MAX  87 (set to 255)  CW   145.437.50

NO-043  UHF-PO-MAX  112 (set to 255) CW   438.900.00

Thatīs it!

After this mod I have about 130 Watts on HF and 6 mtr, about 90 Watts on VHF 
and 40 Watts on UHF! 

I have done this mode a few month ago and I have no problems (my Final 
Transistor is still ok ;-)) !

IMPORTANT: Before changing any values in the Aligment menue, please write 
down your original settings!

WARNING: DOING THIS MOD MAY EVENTUALLY RESULT IN A DAMAGED FINAL TRANSISTER 
AND/OR REDUCED SERVICE LIFE!!

 
 
 
find in www.mods.dk

73 Thomas


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