🚀 go-pugleaf

Joerg wrote:
> John Larkin wrote:
> 
>> On Thu, 25 Jun 2009 19:50:09 GMT, Rich Grise <richgrise@example.net>
>> wrote:
>>
>>> On Wed, 24 Jun 2009 22:01:51 -0700, John Larkin wrote:
>>>
>>>> On Wed, 24 Jun 2009 21:42:07 -0700, <castlebravo242@att.net> wrote:
>>>>
>>>>> "David L. Jones" <altzone@gmail.com> wrote in message 
>>>>> news:h8B0m.53620$FI5.3564@newsfe12.iad...
>>>>>
>>>>>> Check out a rather unusual phenomenon you can see on your 
>>>>>> oscilloscope in my latest blog (#14):
>>>>>> http://www.alternatezone.com/eevblog/
>>>>>> See if you can get it to happen on your scope!
>>>>>> I'll offer a free subscription to my blog for the best screen shot 
>>>>>> posted :->
>>>>>>
>>>>>> Oh, and the probe doesn't have to be shorted either.
>>>>>
>>>>> When I worked a Century Data we had a problem with our new reel to 
>>>>> reel vaccuum column tape drive when ever someone would walk by the 
>>>>> drive when it was reading it would get data errors. The problem was 
>>>>> that the shield on the cable from the heads to the preamp was 
>>>>> grounded on both ends.
>>>>
>>>> That's usually the best way to ground shields.
>>>
>>> When I was a kid, my brother built a Heathkit TOOB amp; in the low level
>>> circuits, they only ever grounded one end of the shields.
>>>
>>
>> Inside a steel chassis pan, it wouldn't matter. But then Heathkit was
>> hardly an authority on signal management.
>>
> 
> Now wait a minute, they engineered darn good stuff. The old HW100/101 
> transceivers were among the best ever made back in the tube days. Still 
> got one. No noises or buzzes whatsoever and its performance in the 
> vicinity of strong signals is stellar. The only not so good thing was 
> the two rubber pulleys because they cooked out too fast, but you could 
> keep a stash of them in the drawer.
> 

Brings back pleasant memories. I donated my HW101 to the Boy Scouts
radio club many years ago. I wish I still had my HW 16 - lots of wee
hours CW with that (my first) rig.

Ed