21-01-2021, 09:17 PM
(This post was last modified: 21-01-2021, 09:19 PM by Geordie McBoyne.)
For my Beau Decca TV reconstruction project an RF deck from a Cossor 916/7 is used.
Valve types apart the design of the RF and IF circuits is very similar to the Plessey signal circuits.
The Cossor unit has 6AM6 pentodes and the Plessey has the Mazda 6F13.
The Cossor RF unit is a perfect fit on the special chassis made for the Decca TV.
In terms of performance the Cossor RF unit is excellent. However, from the time to time the mixer-oscillator stops working. I've a suspicion that the valveholder is causing the problem.
Geordie McBoyne.
Valve types apart the design of the RF and IF circuits is very similar to the Plessey signal circuits.
The Cossor unit has 6AM6 pentodes and the Plessey has the Mazda 6F13.
The Cossor RF unit is a perfect fit on the special chassis made for the Decca TV.
In terms of performance the Cossor RF unit is excellent. However, from the time to time the mixer-oscillator stops working. I've a suspicion that the valveholder is causing the problem.
Geordie McBoyne.
