[Test-Equipment] Hickok signal generator

[Carl]

The B is quite different Ian, the PS and calibrator is SS and the RF section 
is rather different.

Carl
KM1H


----- Original Message ----- 
From: "Ian Wilson" <ianmwilson73 at gmail.com>
To: "Discussion of Electronic Test Equipment" 
<test-equipment at mailman.qth.net>
Sent: Sunday, March 30, 2014 8:51 PM
Subject: Re: [Test-Equipment] Hickok signal generator


> Carl,
>
> Please keep us updated on the 606A - I am just starting out with a 606B. 
> So
> far
> I have replaced a dead 6HG7 (thought I had 4 of those; turned out to be
> only 2 - and
> one of those was dead also), and approximately set the Carrier Zero 
> control
> (there
> was no output in the 'CW' position with the setting when I started out). I
> think I need
> to do all the calibration steps since the manual warns that the oscillator
> level and
> carrier zero controls are interdependent).
>
> Also notice a warble on the note when listening to the calibrator (not on
> zero beat,
> obviously). Most of the pots in this unit are dirty.
>
> 73, ian K3IMW
>
>
>
> On Sun, Mar 30, 2014 at 5:41 PM, Carl <km1h at jeremy.mv.com> wrote:
>
>> My experience with "service grade" sweeper/SG is about nil as Ive either
>> had access to lab grade at work or built my own collection of now
>> affordable gear mostly since retiring 12 years ago.
>>
>> I dont know how it is up in the boonies were you live but down south is a
>> goldmine of belly up auctions should you want to upgrade. Out here is
>> similar.
>>
>> My own project today was getting started on a 50 year old HP-606A that
>> started acting up, looking at the PS with a scope reveals pure uglies! 
>> And
>> even one of the 12B4 regulators has an open filament, but for $30 Im not
>> complaining....its easy to work on with common tubes and early film caps
>> and A-B resistors that are still perfect.
>>
>> I might try restuffing the can electrolytics if they come apart easy,
>> otherwise just put singles wherever they fit and arent heat blasted.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message ----- From: "Brian Burns" <
>> brian at lessonsinlutherie.com>
>> To: "'Discussion of Electronic Test Equipment'" <
>> test-equipment at mailman.qth.net>
>> Sent: Sunday, March 30, 2014 5:51 PM
>> Subject: Re: [Test-Equipment] Hickok signal generator
>>
>>
>>  Hello Carl,
>>>
>>> ~ One limitation of the 288X is the lowest frequency is 100 kc which
>>> eliminates several Halli, Hammy, and National receivers with their low
>>> IF's.
>>>
>>> Yeah, I saw that, but I'm unlikely to go with anything other than one 
>>> high
>>> IF in a single conversion arrangement. If I ever decide to get another
>>> boatanchor receiver, I'll send it to you for restoration!
>>>
>>> ~ For simply sweeping higher frequency filters I suppose a varactor 
>>> pulser
>>> could be used with selectable ranges and rates.
>>>
>>> I was hoping that the variable rate FM modulation feature would work for
>>> getting a passband curve on my 'scope. I've had only a cursory glance at
>>> the
>>> manual, but it shows such a thing. I'm gluing up a guitar today, and
>>> haven't
>>> taken time to look further into it.
>>>
>>> Cheers,
>>>
>>> Brian
>>>
>>>
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