Howard, 1961 is a long time back but as I remember it is a Heartly
oscillator which makes the audio. Then there is a calibrated circuit using
a wire wound pot. You turn it on and there is a pointer on the pot and you
turn the antenna until the tones match. By flipping a switch then qrt
turning the antenna and your there. Yes this is across an analogue meter.
Does this make any kind of sense? Other than the calibrated pot you have
the right idea. 73
Ed K7UC
--------------------------------------------------
From: "Howard, W A 9 Y B W" <[log in to unmask]>
Sent: Thursday, August 18, 2011 10:32 AM
To: <[log in to unmask]>
Subject: Re: Rotor control
> Hi Ed,
>
> Would you give me a description on how this circuit works? In other
> words,
> do you compare tones to indicate the position of the meter? Are we
> talking
> about a control box that has an analogue meter? I'm thinking that one
> could
> build a circuit that increases in pitch as a meter needle moves from far
> left to far right and then build fixed tone circuits to indicate the tone
> for north, south, east, west, etc.
> When the tone indicated by the meter position equals, say the south tone,
> then you are pointed south.
>
> Does this make sense?
>
> Howard W A 9 Y B W
>
>
>
> ----- Original Message -----
> From: "Ed Malmgren" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, August 18, 2011 10:48 AM
> Subject: Re: Rotor control
>
>
>> Mark, When I build something I doubt anyone could follow my wireing jobI
>> have modified it a time or two so probably no way. Sorry. 73
>> Ed K7UC
>>
>> --------------------------------------------------
>> From: "mark" <[log in to unmask]>
>> Sent: Thursday, August 18, 2011 9:26 AM
>> To: <[log in to unmask]>
>> Subject: Re: Rotor control
>>
>>> Hi
>>> Any way you could reproduce the diagram or circuit?
>>>
>>> God bless,
>>> Mark
>>>
>>> God Loves you!
>>> You can visit my website at:
>>> http://christiantraditions.info
>>> Please visit my Prayer page at:
>>> http://christiantraditions.info/mailman/listinfo/prayerlist_christiantraditi
>>> ons.info
>>>
>>> -----Original Message-----
>>> From: For blind ham radio operators
>>> [mailto:[log in to unmask]]
>>> On Behalf Of Ed Malmgren
>>> Sent: Thursday, August 18, 2011 8:08 AM
>>> To: [log in to unmask]
>>> Subject: Rotor control
>>>
>>> Keith, I use a circuit that I got the schematic from the Braille Tech
>>> Press
>>>
>>> way back about 1961. It is a comparator circuit and goes across a Ham 4
>>> control box meter. It looks crappy but has worked since. Wish I still
>>> had
>>> that book with the circuit. 73 Ed K7UC
|
