[Yaesu] FT-1000D mains transformers

2004年1月15日 03:19:44 -0800

John:
I don't think it's a matter of 50 vs 60 Hz. Mains in the U.S. are
120 VAC while Europe and the U.K. use 240 VAC. I don't know much about the
FT-1000D, but it seems to me that Yaesu would find it economical to build
all of them with the same mains XFMR and provide a switch or wiring
mod to change between 120 and 240 VAC. The only thing likely to be affected
by the difference in mains frequency would be a real time clock if it uses
mains voltage zero crossings to keep time. I don't know if the FT-1000D 
has a real time clock. If it does, I suspect that it's self contained with a 
crystal oscillator that's independent of the mains frequency.
Hope this helps.
73,
Dick W1NMZ
John Nelson wrote:
>> As mentioned in an earlier mail item, I'm currently looking for a
> late-production FT-1000D. Nice examples from the USA sometimes show up on
> eBay and it's tempting to consider importing one, especially with the pound
> as high as it is against the dollar. However, the service manager of one UK
> retail outlet claims that this is a Bad Idea because the mains transformers
> are different in European and American items, and that rapid overheating and
> expensive failure will result if a rig manufactured for a 60Hz market is
> used on 50Hz supplies.
>> Does anyone have access to the original parts catalogue, or can advise
> whether the transformer is actually different? Or is this a piece of
> folklore? The specification for my venerable FT-990 indicates that it's
> usable on either 50 or 60Hz supplies, but what's the score for the FT-1000D?
>> Many thanks,
>> John
> GW4FRX