• -0.05% at the base of a 1.2406-1.2419 range - yen led GBP/JPY -0.25%

• Tight ranges across the FX majors in Asia after a volatile week

• UK retail sales in early London lead sterling event risk, poll +0.3% m/m

• Charts; momentum studies rise, 5, 10, and 21-day moving averages climb

• 21-day Bollinger bands head higher - signals suggest further gains

• 1.2590 50% retracement of the July-October fall is a longer-term target

• 1.2327, 38.2% of Oct/Nov rise, and this week's 1.2506 top are key levels

• Thursday's London 1.2377 low and NY 1.2455 high initial support/resistance

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