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[K3] XV144 fault (offset problem?)

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M0XDF

Re: [K3] XV144 fault (offset problem?)

Yes Don, I have an XV144 kit, not built yet, purchased with the K3, and delivered in Dec 2007 - I thought it had a serial number, but I haven't built it yet :-(

So, based on it's ship date, can you tell me if my XV144 would be subject to this mod, or perhaps based on the Crystal in the kit

I'm guessing from the date of publication that the mod for L19 and the Bypass Capacitors probably does apply to my XV144.
73 de M0XDF, K3 #174, P3 #108
--
Sometimes I think we're alone in the universe, and sometimes I think
we're not. In either case, the idea is quite staggering.
-Arthur C Clarke, science fiction writer (1917- )

On 8 Feb 2011, at 02:17, Don Wilhelm wrote:

> David,
>
> This is for the external XV144 transverters, no serial numbers involved.
>
> 73,
> Don W3FPR
>
> On 2/7/2011 9:08 PM, David Ferrington, M0XDF wrote:
>> Can you say from which serial number this affects, Eric?
>> 73 de M0XDF, K3 #174, P3 #108
>>
>> The best time to plant a tree was 20 years ago. The second best
>> time is today. ~Chinese proverb~
>>
>>
>> On 8 Feb 2011, at 00:17, Eric Swartz - WA6HHQ, Elecraft wrote:
>>
>>> Yes, this mod adds an adjustable coil to move the newer XV144 crystals
>>> within the +/- 9.9 kHz calibration range of the K3. In most cases it
>>> will pull the crystal far enough to use an offset of zero, but that is
>>> not guaranteed in all cases. There is a place already on the XV144 PCB
>>> for this part.
>>>
>>> We offer the XV144MDKT at no cost and the user only pays shipping. It
>>> should be up on the parts and mod kits order web page in the later this
>>> week.
>>>
>>> 73, Eric WA6HHQ
>>> ----
>>>
>>>
>>> On 2/7/2011 11:16 AM, hb9wi wrote:
>>>> Hi Eric
>>>> I noticed that Elecraft has published two errata sheets on the transverters.
>>>> They mention an additional coil L19 in series to the crystal.
>>>> May I order the coil at Elecraft?

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Don Wilhelm-4

Re: [K3] XV144 fault (offset problem?)

Dave,

Look at the crystal frequency. If it is 116.000 MHz, then yours is OK.
OTOH, if it is 116.010 MHz, then you need to install the mod.

The bypass capacitors on the 5 volt regulator are applicable to any XV144.

73,
Don W3FPR

On 2/8/2011 3:33 AM, David Ferrington, M0XDF wrote:
> Yes Don, I have an XV144 kit, not built yet, purchased with the K3, and delivered in Dec 2007 - I thought it had a serial number, but I haven't built it yet :-(
>
> So, based on it's ship date, can you tell me if my XV144 would be subject to this mod, or perhaps based on the Crystal in the kit
>
> I'm guessing from the date of publication that the mod for L19 and the Bypass Capacitors probably does apply to my XV144.
> 73 de M0XDF, K3 #174, P3 #108
______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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M0XDF

Re: [K3] XV144 fault (offset problem?)

Don, thank you, always knowledgeable and most helpful as always.
I have 116.000MHz :-)
I'll do what I should have done 3 years ago and inventory the kit and then contact Sales for the caps.

73 de M0XDF, K3 #174, P3 #108
--
Not all those that wander are lost. -J.R.R. Tolkien, novelist and
philologist (1892-1973)

On 8 Feb 2011, at 12:52, Don Wilhelm wrote:

> Dave,
>
> Look at the crystal frequency. If it is 116.000 MHz, then yours is OK. OTOH, if it is 116.010 MHz, then you need to install the mod.
>
> The bypass capacitors on the 5 volt regulator are applicable to any XV144.
>
> 73,
> Don W3FPR
>
>
> On 2/8/2011 3:33 AM, David Ferrington, M0XDF wrote:
>> Yes Don, I have an XV144 kit, not built yet, purchased with the K3, and delivered in Dec 2007 - I thought it had a serial number, but I haven't built it yet :-(
>>
>> So, based on it's ship date, can you tell me if my XV144 would be subject to this mod, or perhaps based on the Crystal in the kit
>>
>> I'm guessing from the date of publication that the mod for L19 and the Bypass Capacitors probably does apply to my XV144.
>> 73 de M0XDF, K3 #174, P3 #108