[Elecraft] K3EXREF query

Brian Alsop alsopb at nc.rr.com
Sun Jul 21 13:07:50 EDT 2013


Thanks guys for the suggestions.

To appreciate the problem one needs to look at Fig's 7 and 9 in the 
K3EXREF manual.  There is no room for tools.  Nor do I think any kind of 
gop is a good idea.  (Though if this screw were necessary for grounding 
I don't think they would have used a split washer but rather inner tooth 
washers)

Upon further reading, the corrections of this module appear to be in 
~1Hz steps.  I was more interested in something that disciplines the 
oscillator in a finer more continuous way.

73 de Brian/K3KO



On 7/21/2013 16:01, Michael Goins wrote:
> I've used a little bit of coax seal too many times to count. Stick a bit in
> the screwdriver tip and it will hold the screw very well.Used t recently
> re-building a T-8 Tennadyne Log Periodic with lots of difficult to access
> areas. Didn't drop a one (and they would have gone into the boom and been
> totally inaccessible).
>
> Mike, k5smg
> Bella-Green Bed & Breakfast
> www.bella-green.com
>
>
> On Sun, Jul 21, 2013 at 10:52 AM, Geoffrey Mackenzie-Kennedy <lx2ao at pt.lu>wrote:
>
>> The most useful tool, which I have found for this type of application, is
>> the simple screw "Grabber".  Not only can this tool be used to hold a screw
>> and washer(s) while starting the thread, but also while removing a screw
>> and washers.  It can also be used to retrieve bits of wire, screws, washers
>> and other small items which may have fallen into "difficult to reach"
>> places.
>>
>> The tool requires only one hand to hold it during use, and is operated by
>> the thumb of that hand.  It is also very inexpensive, about $2, and is
>> available from most of the major stockists.
>>
>> 73,
>> Geoff
>> LX2AO
>>
>>
>>
>> On July 20, 2013 at 6:39 PM, Ron D'Eau Claire wrote:
>>
>>   You are right that one must be careful to not lose the split lock washer
>>> between the KREF3 and the front panel, but testers didn't find the process
>>> very difficult to do.
>>>
>>> What a couple of people who suffered hand tremors reported doing to avoid
>>> that lock washer falling off was to put a small drop of petroleum jelly or
>>> soft candle wax on the screw after placing the lock washer on it. That
>>> kept
>>> the washer from easily falling off while they repositioned the KREF3 board
>>> and started the screw threads into the fitting on the front panel shield.
>>>
>>
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