[ARC5] WHINK and crystals.

[Tim]

Hi Ken -
I KNEW that the GRC-109 could not have failed!  LOL
Which Whink product did you use?  There's many.  Lye based?
Also, agitating the solution might make a difference in the amount of time
needed.
Good stuff - Thanks!
Tim
N6CC


On Wed, Jun 26, 2013 at 2:39 PM, Kenneth G. Gordon <kgordon2006 at frontier.com
> wrote:

> Yesterday I decided to fire up the GRC-109 for the first time in a couple
> of years, so I dug out
> my box of crystals, and set the rig up on the bench.
>
> The first crystal I grabbed was my only 7025 rock, and I plugged it in and
> pressed the key.
>
> Nothing.
>
> Hmmm....says I...
>
> So I checked all the voltages, took the transmitter ouf of its box to make
> sure everything was
> lighting up, etc. Everything was normal.
>
> So, I grabbed another crystal and tried it. Viola! Everything worked fine.
>
> Took the 7025 crystal apart to find it split in two pieces right across
> from one corner to the
> other.
>
> I took one of those FT-243s I had bought to try moving them into the ham
> bands, a 6975 Khz
> rock. I plugged it into the '109 and it fired right up. The frequency
> counter read 6975.35 KHz.
>
> I took that one apart, carefully, and dropped the crystal blank into a cup
> I had made by cutting
> the bottom couple of inches off a much larger styrofoam cup, marking it
> carefully with skull
> and cross bones, and pouring 1/8" of WHINK into.
>
> After about 30 minutes of soaking in the WHINK, I carefully fished it out
> with a pair of
> tweezers and washed it off in cold water. It had moved up 500 Hz. to
> 6579.88 KHz.
>
> Calculating the shift-rate at approximately 2 KHz/hour, I left the crystal
> in the stuff for the next
> 14 hours. Now it oscillates vigorously at 7009 KHz.
>
> Final calculations show approximately 2.2 KHz/hour of soaking in WHINK.
>
> To get it to 7025 KHz, I need to soak it another 7.3 hours, or 7 hours and
> 18 minutes.
>
> It is now 2:40 PM here. I'll let it soak until 9:58 PM.
>
> Let's see how close I can get to my goal of 7025 KHz.
>
> Ken W7EKB
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