[Boatanchors] RANGER LOW VOLTAGE CHOKE

[Rodger]

Bill,

I had to replace mine in my Ranger 1 and my replacement came from a 
Viking 1 or 2 parts unit; it is the same choke (15 henry , 280 ohm DC 
resistance).

I measured my current draw at 85 mils in phone and for curiosity I 
measured the current draw of my Ranger 2 at 88 mils, also on phone-sorry 
but I never made a CW measurement.  When I got my Ranger 1 (I use it to 
drive the Desk KW) it had a hum problem which I finally traced to 
someone installing a properly sized 5 H choke in place of one of the 
proper value.  I think my Ranger 1 has had every possible cause of hum 
one could have in a Ranger.

If you believe Johnson's numbers, the current draw should only be around 
70 mils (20 volts drop across a 280 ohm resistance).  In any case, a 100 
mil rated replacement should be fine as should any low voltage choke 
from a Ranger 1 or 2 or a Viking 1 or 2.  I imagine the corresponding 
Valiant part is physically larger and would not fit.

Rodger WQ9E

Mr. and Mrs. Magoo wrote:
> Accompanied by some smell and smoke, the low-voltage choke in my Johnson 
> Ranger has bitten the dust.  Does anyone know the specs on that choke other 
> than it is 15 h?  I measure about 90ma draw in CW but presume that one could 
> add another 30ma or so when in phone.  While I have lots of spare chokes, 
> most are either too physically large or have a current rating of about 100 
> ma.  It would help to know what current it is supposed to handle so I can 
> attempt to locate a suitable replacement.
>
> Failing that, is there a good used choke from a Ranger out there?
>
> Bill, VE3NH 
>
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