[Boatanchors] [3890_AM] RAK / RAL Receivers: Couple of tips.

[Ronnie Hull]

I agree there is no place in this list for someone’s personal political horse poop. 
I think posting this kind of rubbish should be an automatic expulsion from the list

I also think an apology is due the list

W5SUM Ronnie

Sent from my iPhone

> On Jun 17, 2019, at 8:07 AM, Mike - WZ5Q wz5q at wz5q.net [3890_AM] <3890_AM at yahoogroups.com> wrote:
> 
>> If one wishes to 
>> listen to Rash Windbaugh on the BCB, perhaps
>> one could bypass the audio filters.
> 
> Now why did you have to go and ruin an otherwise fabulous technical article and review with your bias?
> Disappointing.
> 
> 73
> Mike
> WZ5Q
>> On 6/17/2019 7:18 AM, 'David Stinson' arc5 at ix.netcom.com [3890_AM] wrote:
>>  
>> Been cleaning and reviving a WWII Navy RAK
>> receiver
>> which is going to Jim Sargent's next auction in
>> July.
>> The beautiful old beast has been patiently waiting
>> its
>> turn for about 25 years (I have another I mean to
>> keep).
>> De-Ox-it and lubricate,
>> work over the grounds, then powered and it came
>> right
>> up with no issues. 180V B+ plays with about 25mA
>> current.
>> Amazing machine; like opening a tomb that's been
>> sealed 
>> for millennia, then the occupants sits-up and
>> says: "Good Morning!"
>> 
>> Those of us who know the RAK/RAL are familiar with
>> 
>> them know this, but for those who have yet to
>> light one up:
>> The "headphone" jack on the front of the radio
>> is NOT for the regular, single-circuit headphone
>> or for a matched, ground-returned speaker.
>> The audio output of these receivers is balanced
>> with a center-tap on the Audio Output transformer
>> secondary grounded. If you plug-in a
>> single-circuit
>> headphone with one side to the tip and one
>> side to the ground, you're shorting-out half of
>> the audio output secondary.
>> Why RCA snuck this "land mine" in to hoist
>> the unwary is a mystery.
>> So use a three-circuit plug if using the
>> front-panel jack.
>> 
>> An AM signal, like on the BCB, will sound
>> bassy and "distorted." Like a certain famous
>> person is reported to have said:
>> "This isn't a "bug," it's a "feature."
>> The RAK/RAL are optimized as CW receivers and
>> they excel at this, if one does not rail
>> the Sensitivity control. If one wishes to 
>> listen to Rash Windbaugh on the BCB, perhaps
>> one could bypass the audio filters.
>> 
>> Anyone else want to add some good info
>> on resurrecting the RAK/RAL?
>> 
>> GL OM ES 73 DE Dave AB5S
>> 
>> 
> 
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> Posted by: Mike - WZ5Q <wz5q at wz5q.net>
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