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CambridgeWorks · 22nd Jan 2023, 9:59 pm

T401 and T4001 not a lot different?
R401 and R4001 two entirely different beasts!
R401 was a designer's ultimate 1970s fantasy. PLL for fm demodulation. AM/FM by changing a few links. PCB was hard to discern as a proper rx. Rubbish die cast box front end prone to faulty feedthrough decouplers and instability.
R4001 internally actually looked like a proper rx. You could almost tune it up without a handbook. I exaggerate, but it looked the part, just like a proper rx and worked well.
Rob

22nd Jan 2023, 9:59 pm	#16
CambridgeWorks Nonode Join Date: Jun 2010 Location: Spalding, Peterborough, Cambridgeshire, UK. Posts: 2,859	Re: Pye T4001 AM TX Modulator T401 and T4001 not a lot different? R401 and R4001 two entirely different beasts! R401 was a designer's ultimate 1970s fantasy. PLL for fm demodulation. AM/FM by changing a few links. PCB was hard to discern as a proper rx. Rubbish die cast box front end prone to faulty feedthrough decouplers and instability. R4001 internally actually looked like a proper rx. You could almost tune it up without a handbook. I exaggerate, but it looked the part, just like a proper rx and worked well. Rob __________________ Apprehension creeping like a tube train up your spine - Cymbaline. Film More soundtrack - Pink Floyd