By Eric Burroughs
TOKYO, Jan 30 (Reuters) - The dollar was steady against a basket of currencies on Wednesday, with investors waiting to see how big an interest rate cut the Federal Reserve delivers later in the day in its fight against the threat of a U.S. recession.
But the U.S. currency, as well as high yielders like the Australian dollar, fell against the yen as investors trimmed positions before the Fed decision, which kicks off a slate of key events including U.S. data on manufacturing and employment later in the week.
A fall in Asian stocks also prompted market players to unwind risky positions such as carry trades, in which the low-yielding yen is used to finance purchases of higher-yielding assets elsewhere.
Stock market moves have been a major driver for currencies, as investors see them as a barometer for risk. Tokyo's Nikkei share average <
> was down 1.5 percent."Investor risk appetite is the factor that sets the yen's direction now, more focused than the Japanese currency's yield disadvantage over others," said a trader at a big Japanese bank.
The Fed is widely seen following up last week's emergency 75 basis point rate slash, its biggest in a quarter century, with another cut of 25 or 50 basis points after a two-day meeting ending later in the day.
A hefty Fed rate cut from the current 3.5 percent could cut both ways for the dollar, which has slipped back towards record lows hit last year against a basket of currencies.
While a bigger cut would erode the dollar's yield appeal for investors, it could boost hopes that the economy can avoid a sharper downturn this year and next and as a result give the U.S. currency a lift.
"It's a tough call," said Sean McGoldrick, head of FX trading at Morgan Stanley in Tokyo. "A 25 basis point rate cut could be a happy medium between what the market is expecting and what would be the prudent thing to do."
McGoldrick said the Fed would likely trim by 25 basis points because it is still worried about inflation and does not want to be seen as beholden to market expectations.
Futures on the fed funds rate were showing a roughly 70 percent chance of a half-point cut. <FEDWATCH>
After last week's aggressive cut, the Fed said it was acting to counter a deteriorating economic outlook and increasing risks to growth. The move also came after a sharp sell-off in stocks at the start of the year on fears of a U.S. recession.
The dollar slid 0.3 percent to 106.75 yen <JPY=> from late U.S. trade, but it stayed above a three-year low of 104.95 yen struck last week.
The euro dipped to $1.4765 <EUR=> from $1.4770 <EUR=>, while the single European currency was down 0.4 percent to 157.55 <EURJPY=R>.
The dollar index, a gauge of its performance against six major currencies, barely budged at 75.54 <.DXY> compared with its all-time low of 74.71 struck last November.
Data on Tuesday showing surprisingly strong U.S. durable goods orders in December helped to ease some of the gloom about the economy's health, even as other figures showed housing prices in 10 metropolitan areas posted a record drop in November.
FED REACTION
The reaction of stock markets will also be key for the dollar and the yen.
Gains on Wall Street following the Fed move would prompt investors to buy higher-yielding currencies with funds from low-yielding ones like the yen in the carry trade, pushing the yen lower.
But any stock market slide would likely spark a pull-back in major currencies against the yen, analysts said.
The Japanese currency has jumped against major currencies mainly because of the shifts in investor risk appetite to hold carry trades rather than any domestic factors.
The potential hit to the Japanese economy from a U.S. slowdown and possibly recession has stirred speculation the Bank of Japan could cut rates from the already low level of 0.5 percent -- the reason the yen is popular for carry trades. (Additional reporting by Rika Otsuka; Editing by Mike Miller)