Folks,
Thanks for all the on- and off-list feedback on the L7.
Seems like there is a fair number of mods. to do to make the amp.
even better than stock.
I may try 4-400 if they will fit in the box and if there is enough HV
to make them go, but will probably invest in a pair of 3-500 in due course.
None of the replies I received mentioned parasitics - I hope Rich is
in rude health, wherever he is!
Regards.
Mark.
-------------------------------------------------
At 13:47 03/06/2007, Mark Hill wrote:
>Folks,
>
>Have just purchased a late model Drake L7E (E for export?) as a
>utility amplifier for HF. As a teenager, I used to dream of being
>able to afford a pair of 3-500 - only taken me 30 years to get there!
>
>I'm guessing that, as the amp. comes from the 'golden age', it might
>benefit from a few mods. - possibly inrush protection and some
>attention to the changeover relay if its a high voltage coil
>type. Can anyone help short cut a lot of 'Googling'?!
>
>Also, does anyone have a manual (as a PDF etc) for the PSU they could send me?
>
>Finally, does anyone have experience of running 4-400 in place of the
>3-500 in this amp.? My teenage store cupboard still has a few 4-400, I think!
>
>Regards.
>
>Mark.
>*******************************************
>Mark Hill - G4FPH
>E-mail: g4fph@mjha.co.uk
>Current web pages at: www.g4fph.net
>Old web pages at: www.qsl.net/g4fph
>----------------------------------------------------------------------
>Dipoles resonant on 1940 / 3700 kHz
>----------------------------------------------------------------------
>Remember - SIDE for HV safety:
>S witch off
>I solate
>D ump
>E arth
>*******************************************
>
>
>_______________________________________________
>Amps mailing list
>Amps@contesting.com
>http://lists.contesting.com/mailman/listinfo/amps
*******************************************
Mark Hill - G4FPH
E-mail: g4fph@mjha.co.uk
Current web pages at: www.g4fph.net
Old web pages at: www.qsl.net/g4fph
----------------------------------------------------------------------
Dipoles resonant on 1940 / 3700 kHz
----------------------------------------------------------------------
Remember - SIDE for HV safety:
S witch off
I solate
D ump
E arth
*******************************************
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