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G4XTA > MODS 11.06.06 15:30l 44 Lines 2253 Bytes #999 (0) @ WW
BID : 19239_GB7ESX
Read: GUEST DH1FH
Subj: YAESU WIDEBAND MOD WARNING
Path: DB0FHN<DB0RGB<DB0MRW<DB0FSG<DB0ZKA<DB0GPP<DB0LX<DB0CZ<DB0GE<DB0ZDF<
DB0LJ<DB0RES<ON0AR<ZL2BAU<GB7YKS<GB7SYP<GB7ESX
Sent: 060611/1032z @:GB7ESX.#31.GBR.EU #:19239 $:19239_GB7ESX [Witham, Esx]NNA
HI ALL
I OWN SEVEN (YES SEVEN!) YAESU FT7800 MOBILE RIGS.
I HAVE THEM ON PACKET, IN MY VEHICLES AND IN MY SHACK. GREAT RADIO.
HOWEVER, JUST HAVING ONE OF THEM 'WIDEBAND TX' MODIFIED HAS REVEALED TO ME
THAT THE INFORMATION THAT IS CURRENTLY CIRCULATING AMONGST HAMS AND ON
SOME OF THE 'MODS' WEBSITES IS TOTALLY WRONG, AND WILL SPOIL YOUR RADIO'S
OPERATION IF THESE INSTRUCTIONS ARE FOLLOWED.
THE WIDEBAND MOD (ACCORDING TO THE WEBSITES) IS DONE BY REMOVING A TINY
SURFACE-MOUNT CHIP RESISTOR (ZERO OHMS) FROM THE ROW OF LANDS AT THE FROM
FRONT LEFT-HAND SIDE, JUST NEXT TO THE MAIN PROCESSOR CHIP UNDER THE TOP
LID
(THIS IS THE LEFT SIDE WHEN LOOKING FROM THE FRONT).
WELL, THAT'S GARBAGE! IF YOU FOLLOW THAT PROCEDURE YOUR RIG WILL END UP
RETAINING THE CORRECT AUTO REPEATER SHIFT ON THE 2M BAND, BUT THE
FREQUENCY BAND ALLOCATED TO THE 70CMS SIDE WILL GO HAYWIRE AND RE-POSITION
ITSELF IN A BAND BELONGING TO ANOTHER CONTINENT OR REGION.
YOU MUST NOT SIMPLY REMOVE THE RESISTOR, YOU MUST *MOVE* IT TO ANOTHER
POSITION.
YAESU HAVE A DATA SHEET SHOWING WHERE TO PLACE THESE LITTLE LINK RESISTORS
ALONG THE ROW OF POSITIONS AVAILABLE. WITH THE CORRECT COMBINATION YOU CAN
CHOOSE ALL KINDS OF OPTIONS FOR VARIATIONS OF BAND LIMITS, TX LIMITS
AND THE POSITION OF THE AUTO REPEATER SHIFT ON THE DIFFERENT BANDS.
THERE ARE AT LEAST 12 CHOICES OF RIG FORMAT AVAILABLE, AND THEY *ALL*
REQUIRE TWO LINKS IN PLACE. THERE IS NO VERSION THAT USES ONLY ONE LINK!!
IF YOU OPERATE WITH JUST ONE LINK AS THE MODS SITES SUGGEST YOU DO, THEN
YOUR RIG BECOMES A TOTAL 'MONGREL' THAT MIGHT INDEED DO WIDEBAND TX, BUT
EVERYTHING ELSE ON IT IS MESSED-UP.
IF YOU FOLLOW THE YAESU DATA SHEET PROPERLY, YOU CAN STILL HAVE YOUR WIDEBAND
TX, BUT STILL RETAIN THE PROPER FUNCTIONS OF THE RADIO.
I KNOW THIS ONLY TOO WELL, AS I JUSST BOUGHT A NEW FT7800 THAT A DEALER HAD
'HELPFULLY' MODIFIED FOR ME. EVERYTHING WAS WRONG. THANKS TO YAESU
PROVIDING ME WITH THE CORRECT INFO I WAS ABLE TO GET A LINK ADDED, AND
NOW THE RIG WORKS BEAUTIFULLY AS IT SHOULD, AND IS ALSO WIDEBAND.
IF YOU'RE GONNA CHOP YOUR NEW RIG UP, THEN I SUGGEST YOU IGNORE THE MODS
PAGES, AND DO IT RIGHT FIRST TIME.
THANKS YAESU, FOR A GREAT RADIO AND FOR SAVING MY BACON!!
MNI 73 Paul G4XTA
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