[ARC5] BC-611 Air to Ground

[WA5CAB at cs.com]

Jeep,

That must have been the problem.  It just didn't compute when I read your 
post earlier.  Although it's a little less at 3500 and a little more at 6000, 
on average the antenna coils cover 200 KC and the tank coils 400.  So the 
coils that were in the radios tuned to 5500 KC were,  two steps too high to 
work.  Even if it was enough years after WW-II for the MFP treatment to have 
lowered the range with external capacitance.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 02/09/2014 17:09:28 PM Central Standard Time, 
jeepp at comcast.net writes: 
> On 2/9/2014 4:21 PM, Robert Eleazer wrote:
> >   "They were just a bit too high to tune and use them directly on our 
> (then) regular frequency of 4585 kHz."
> >
> >I assume that since the BC-611 requires that a plug-in coil be changed 
> when the crystal for a new frequency goes beyond a certain range that 
> presented a problem with putting the sets on 4585?
> >
> >Wayne
> >______________________________________________________________
> My recollection is exactly that.  I was just getting into amateur radio 
> and did not have the experience nor knowledge to do anything other than 
> listen to those who "knew".  We did not have coil sets and whatever else 
> necessary.  I do know that one of my mentors, a gent who was a wizard at 
> crystal grinding did provide crystals for the attempts to put them on 
> our desired frequency.  So, that was not the issue.  I don't know what 
> the range of a given coil set might be, perhaps someone has the book and 
> can quite that data and confirm if we simply were ignorant of how to 
> make them work, at the time, or they truly were out of range, as-is.
> 
> Jeep K3HVG