WIRELESS telecoms specialist Filtronic has sold its US warfare division to Teledyne for £6.8m.

The deal to sell Filtronic Solid State will help the firm concentrate on its core operations, designing and making customised microwave electronic subsystems.

It will also enable the company to pay off some of its £39.7m debt.

It is part of an ongoing debt repayment plan by the company, which has seen it repay £54.5m since February last year.

Solid State made £800,000 on sales of £7.1m last year.