Warren
I have all the original handbooks for the Decca 5501 range if you need
specific info let me know. The low band versions have a different Capacitor
board and are easy to mod for 73 Khz
The higher band versions are not so convenient to mod for 73 but more
suited to 136.
I have 2 x 5501 units for the high band modified for 136 but fortunately I
have 2 x C boards for the low band so I just need to modify the Coils for
73 if we got this band again
I was active on 73 towards the end but by then nearly everyone had moved to
136
Most hams in the UK were using modified Audio amps on 73 and I do not
recall anyone using the decca on that band at the time. Decca amps were not
avai
Sent: Sunday, August 04, 2013 1:28 AM
Subject: LF: Decca Experts - Converting Red to Purple
?
Hello to all of the Decca Navigator experts out there...
I have an unconverted Decca 5501 transmitter which is
marked "Red" - I believe that is 112kHz - would like to run it on 73kHz.
The tank coil reads about 80uH, can I just pad it down with more "C" to get to
73kHz or would that mess up the L/C ratio and thus lower the loaded "Q" ?
Another question - anyone have a spare "Purple" Decca on
71kHz that they would consider parting with?
--
73 Warren
K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
WG2XRS/1
