Yeah, I meant the current regulator. Shipboard power in the 30's wasnt
exactly stable.
A simple converter to take 160 and 80 down to the RAK's best tuning ratio
band would be an interesting experiment.
Carl
KM1H
----- Original Message -----
From: "Bill Cromwell" <wrcromwell@gmail.com>
To: "ZR" <zr@jeremy.mv.com>
Cc: "Thomas" <ac7a@cox.net>; <topband@contesting.com>; <w7dra@juno.com>
Sent: Sunday, May 20, 2012 10:01 AM
Subject: Re: Topband: staying up with the latest technology, receiver
evaluation
> On Sun, 2012-05-20 at 08:46 -0400, ZR wrote:
>> The RAK and RAL are arguably the best regen ever manufactured. There was
>> a
>> pair of them in Emergency Radio aboard a USN tanker I spent a few years
>> on
>> in the 60's and I used them often to keep my code speed up by copying
>> numbers groups.
>>
>> Ive a RAK-7/RAL-7 pair here the past few years and have been using the
>> RAL
>> more often with the pre WW2 QRP station with the TX being a Meissner
>> Signal
>> Shifter VFO with plug in coils.
>>
>> While the RAK is a better CW radio due to a sharper audio filter its only
>> goes to 600KHz. I havent made any mods to the RAL yet but I might add an
>> outboard brick wall audio filter.
>>
>> The audio AVC, actually a limiter, works wonders in T storm static.
>>
>> These are not light, the radio is 74# and the outboard PS 41#. Remove the
>> regulator tube from the PS for a big power savings and heat drop. Its not
>> needed on a home mains.
>>
>> Carl
>> KM1H
>
> Hi,
>
> The RAK 7 that I have certainly changed my mind about regens! I got it
> in the 80s to look at LORAN signals not knowing it was a regen until I
> got it home. Then that big "Regeneration" control became a clue <grin>.
> I was amazed. I did get to examine the LORAN signals on an old, slow
> o'scope. I have been looking for a RAL lately to put together the "RCA
> Twins". I have been thinking of trying to clone a RAK/RAL set. Not to
> make any improvements. Just to see if I can even get close to the real
> deal in performance. A lot went into those.
>
> I looked in the manual to be sure but there is a voltage regulator and a
> current regulator in the power supply. It's the current regulator that
> is the big power hog. The radio needs 60 watts without it and 200 watts
> with it. Mine has been without the current hog..er... regulator since
> some time before I got it. Mine will never see naval service again!
>
> 73,
>
> Bill KU8H
>
>
>
> -----
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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