home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
World of Ham Radio 1997
/
WOHR97_AmSoft_(1997-02-01).iso
/
mods
/
yaesu
/
ft411_8.doc
< prev
next >
Wrap
Text File
|
1997-02-01
|
4KB
|
102 lines
Subject: Yaesu FT411 mods: warning
If you have a Yaesu FT411 and you do the mods, beware that you will lose
ARS and auto-leading-1, plus erase your memories. Here's an annotated
version of the mods information, with some missing information the
original author apparently thought was too trivial to record (sigh). I
mailed a copy to Bramwell.
___________
Date: 16 Feb 89
From: rfc@briar.philips.com (Robert Casey;6282;3.57;$0201)
Subject: FT 411 mods [comments added by Alan Silverstein]
copied from packet:
Msg# TSP Size Read To @ BBS From Date Time
24250 BN 2876 1 YAESU 4X6TL 890208 1513
Subject: FT-411 Modification.
From: 4X6TL@4Z4SV
FT 411 OUT OF BAND MODIFICATIONS
1. Open the front cover.
(This was one of the hardest steps!
Yank off the three top knobs. Remove all five top screws, the two
side screws, and the four screws holding in the battery plate.
Carefully pop off the top cover (there's a catch) by prying with a
small screwdriver at the front left. Slide off the complicated top
rubber gasket. I removed the PTT gasket and the carry strap too,
but there's probably no reason to do so.
Now the unit should fold open from the left into two halves joined
by fragile ribbon cable. The carry strap T bar will fall out;
remember to put it back later.)
2. Locate the CPU unit (it is located on the front cover).
(There's a large copper sheet over it, with ribbon cable coming out
the left side.)
3. Locate jumpers 1, 2, 3 and 4. These are the band setting jumpers.
(They are at the lower left of the copper sheet, each a pair of
semicircles of copper on the epoxy board, separated by small gaps,
with white numbers above.)
4. Jumpers 1, 2 and 4 should be disconnected, and jumper 3 should be
connected.
(In my (US) unit only jumper 2 was soldered across. Removing the
solder on jumper 2 was easier than adding some to jumper 3. It's
hard to reach the jumpers. I held a piece of wire with pliers and
touched the iron to that. I was sure to ground the iron to the
chassis before soldering.)
5. Close the radio.
(Whew!)
6. Apply power to the radio and turn it on. The display will initialize
with memory 1 flashing and the frequency display will show 1.000.
(And you can set any numeric value, it seems, even silly ones, using
the dial, arrow keys, or keyboard.)
7. Now, adjust the display to the desired lowest receive frequency.
When done, press VFO. The memory channel will now show 2 flashing.
8. Adjust the display to the desired highest receive frequency When
done press VFO. The memory CH will now show 3 flashing.
9. Adjust the display to the desired lowest transmit frequency. When
done, press VFO. The memory channel will now show 4 flashing.
10. Now, adjust the display to the desired highest transmit frequency.
When done, press VFO. The rig is now set for your programmed band
on transmit and receive.
(It worked! BUT, I lost two features:
1. ARS (auto repeater shift) is now absent. Apparently jumper 2
sets the US band plan and related features, as a package.
2. Now have to type in the leading "1" for all frequencies, where
before it was automatic.
Also, the processor did a coldstart -- all memories lost.)
COMMENTS
1. After the rig is programmed to the band and you want to change it to
other ranges, you will have to open the rig again and disconnect
jumper 3, then to apply power to the radio, turn it off again, open
it again, connect jumper 3 back and repeat from steps 5.
(Not very likely I'll ever do that again! -- ajs)
Aviad 4X6TL@4Z4SV