[Milsurplus] Opening HC-6 cans ?

[David Olean]

I was under the impression that the quartz crystals in HC-6/U holders 
were attached by plated metal right on the blank. If this is true, you 
will have a harder time grinding as the metal will have to be removed 
first.  Then how do you re attach the small wires after grinding.  I 
guess I need to open an HC-6/U and find out for sure!  What was the 
problem with the 100 watt iron?  I suspect that the can was crimped onto 
the base and then sweat soldered under a vacuum, making removal a 
serious chore for a human with only two hands.

In servicing comm gear with dead crystals back in the "old days", I 
often noted that heating the xtal can with an iron would make it start 
up again.  That was one way to localize the problem. Moisture related?

Dave K1WHS

On 9/20/2019 4:21 PM, Hubert Miller wrote:
> I found, or i should say rediscovered, a bunch of HC-6 rocks that i 
> removed from a 1950s Collins VHF air transmitter i scrapped some years 
> back. This set apparently used a crystal mixing scheme to generate the 
> VHF  channels. There's abt 20 right in the 80m voice band but they all 
> end on odd numbers like 3833.3 kHz. I would like to harvest the blanks 
> and mebbe grind them to more popular defined channels like 3885. I 
> recall in the past my attempts to open the soldered ones using a 100 
> watt iron didn't work. Maybe cutting them open? Some are not soldered 
> anyway. What use: jeweler's blade coping saw? Dremel ? What think you ?
> -Hue
>
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
>
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