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Biggles · 28th Sep 2017, 8:08 pm

I must have looked at hundreds of BE470 sets but the PF1 was a bit before my time. There was also a BE600 a bit later on which was in a much more robust diecast? case instead of that blue plastic. They were both modular construction types but to be honest we mostly first lined them and tweaked them back on frequency with the famous crystal calibrator to zero beat them back on channel, except you could get it 25KHz off if you weren't careful as the range of the trimmer was quite a bit. Deviation, current draw, supertick and Rx sensitivity were also checked. The real tricky faults went off to the MU down at Kippax. I trained up on them there for a week.
Alan.

28th Sep 2017, 8:08 pm	#19
Biggles Rest in Peace Join Date: Feb 2004 Location: Hexham, Northumberland, UK. Posts: 2,234	Re: Common Pye PF1 RX deafness problem I must have looked at hundreds of BE470 sets but the PF1 was a bit before my time. There was also a BE600 a bit later on which was in a much more robust diecast? case instead of that blue plastic. They were both modular construction types but to be honest we mostly first lined them and tweaked them back on frequency with the famous crystal calibrator to zero beat them back on channel, except you could get it 25KHz off if you weren't careful as the range of the trimmer was quite a bit. Deviation, current draw, supertick and Rx sensitivity were also checked. The real tricky faults went off to the MU down at Kippax. I trained up on them there for a week. Alan.