WASHINGTON — President-elect Barack Obama is urging Congress to postpone the Feb. 17 switch from analog to digital television broadcasting, arguing too many Americans who rely on analog TV sets to pick up over-the-air channels won't be ready.

In a letter to key lawmakers Thursday, Obama transition team co-chairman John Podesta said the digital transition needs to be delayed largely because the Commerce Department has run out of money for coupons to subsidize digital TV converter boxes for consumers. People who don't have cable or satellite service or a TV with a digital tuner will need the converter boxes to keep their older analog sets working.

Obama officials are also concerned the government is not doing enough to help Americans — particularly those in rural, poor or minority communities — prepare for and navigate the transition.

"With coupons unavailable, support and education insufficient, and the most vulnerable Americans exposed, I urge you to consider a change to the legislatively mandated analog cutoff date," Podesta wrote to the top Democrats and Republicans on the Senate and House Commerce committees.

In 2005, Congress required that broadcasters switch from analog to digital broadcasts, which are more efficient, to free up valuable chunks of wireless spectrum. The newly available room in the airwaves can be used for commercial wireless services and for emergency-response networks.

Because Congress set the Feb. 17, 2009 date for the change, it would have to pass a new law to postpone it.

Obama's request for a delay is a victory for Consumers Union, which had asked for the digital transition to be postponed

"We are extremely pleased the incoming administration is supportive of consumer efforts to ensure that poor, elderly and rural consumers do not face economic hardship as we move broadcasting to digital transmission," said Gene Kimmelman, the group's vice president for federal policy.

The Obama team decided to push for a delay after the National Telecommunications and Information Administration, an arm of the Commerce Department, said Monday that it had hit a $1.34 billion funding limit set by Congress to pay for converter box coupons.

The coupon program allows consumers to request up to two $40 vouchers per household to help pay for the boxes, which generally cost between $40 and $80 each and can be purchased without a coupon.

The NTIA said it had no choice but to start a waiting list for coupon requests as of Jan. 4, meaning that consumers who have applied since then are unlikely to receive their vouchers before Feb. 17. At this point, the agency is sending coupons to people on the list only as unredeemed coupons now in circulation expire, freeing up more money for the program. The waiting list currently has requests for 1.1 million coupons.

Congress is considering whether to step in with new accounting rules and possibly more money to get the program back on track.

In his letter, Podesta said government funding for both the coupon program and consumer education and support efforts is "woefully inadequate." Obama plans to include resources to help viewers through the digital transition in his economic recovery package.

His proposal to push off the transition, however, is running into some resistance, particularly among Republicans.

Meredith Attwell Baker, head of the NTIA, said the Bush administration opposes a postponement since the government and industry have "invested so much in preparing for this date."

A delay, she said, "would create uncertainty, frustration and confusion among consumers."

Baker added that the current administration wants to instead focus on quickly fixing the problems facing the coupon program to meet last-minute demand ahead of the Feb. 17 cutoff. The NTIA is asking for another $250 million in funding for the program.

Meanwhile, Rep. Joe Barton of Texas, the top Republican on the House Energy and Commerce Committee, insisted there is no need to "bail out" the digital transition program because the NTIA can send out more coupons as unredeemed ones expire.

"Ditching the deadline and slathering on more millions of taxpayer dollars ... is just panic," he said in a statement.

But Senate Commerce Committee Chairman John D. Rockefeller, D-W. Va., said he would support delaying the digital transition "until we can do it right."

"The Obama administration deserves time to bring order to what has been an appallingly mismanaged process by the Bush administration," Rockefeller said in a statement.

That sentiment was echoed by Michael Copps, one of two Democrats on the Federal Communications Commission.

"More time can only help put in place the kind of consumer-focused outreach and assistance that should have been up-and-running months ago," he said.

For its part, the National Association of Broadcasters did not take a position on whether to postpone the switch to digital, but a spokeswoman said NAB believes the coupon program can be fixed without forcing a delay.

One organization that opposes the proposal is the wireless industry's main trade group, CTIA - The Wireless Association, which counts Verizon Wireless and AT&T Wireless among its members. Those two companies emerged as top bidders in the federal auction of much of the wireless spectrum being freed up by the digital transition.

The Consumer Electronics Association, too, opposes a delay.

"First responders urgently need the analog spectrum, as do innovators waiting to deploy innovative new wireless broadband services," said Gary Shapiro, who heads the group.