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Krystaly crystals needs crystal parameters for MVP

 

After being quoted ~$55 ea. from QuartSLab I decided to contact Krystaly, & they're asking for the package (I think it's HC-49/U), parallel or series resonance, capacitive loading, & PPM adjustment @ 25 C (I seem to recall +/- 30 kHz @ Fo, which translates to ~+/- 70 PPM). Does anyone have the missing info?

Thanks

Bob NO6B
 

What band MVP?? It may make a difference.? Receive or transmit?

On 1/13/2021 2:14 PM, Bob Dengler wrote:
After being quoted ~$55 ea. from QuartSLab I decided to contact Krystaly, & they're asking for the package (I think it's HC-49/U), parallel or series resonance, capacitive loading, & PPM adjustment @ 25 C (I seem to recall +/- 30 kHz @ Fo, which translates to ~+/- 70 PPM). Does anyone have the missing info?

Thanks

Bob NO6B
tony dinkel
 

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If an xtal company has to ask, I would go with Quartslab. At least they have the parameters. Otherwise, you may have to go with them anyway. Save yourself the time and frustration.

I'm getting ready to pull the trigger on an order to Quartslab. Not looking forward to the price tag. It will most likely be my last xtal order ever.

td
wb6mie

From: [email protected] <[email protected]> on behalf of Joe <k1ike_mail@...>
Sent: Wednesday, January 13, 2021 11:55 AM
To: [email protected] <[email protected]>
Subject: Re: [repeater-builder] Krystaly crystals needs crystal parameters for MVP
?
What band MVP?? It may make a difference.? Receive or transmit?

On 1/13/2021 2:14 PM, Bob Dengler wrote:
> After being quoted ~$55 ea. from QuartSLab I decided to contact Krystaly, & they're asking for the package (I think it's HC-49/U), parallel or series resonance, capacitive loading, & PPM adjustment @ 25 C (I seem to recall +/- 30 kHz @ Fo, which translates to ~+/- 70 PPM).? Does anyone have the missing info?
 

At 1/13/2021 11:55 AM, you wrote:
What band MVP??
UHF TX.

I already know the multiplication formulas (TX = X36, RX = X27 - 11.2). I just need to know the loading capacitance.

W.r.t. QuartSLab: if necessary I may have to place the order, but only because replacing the radio will be more difficult in this particular case. When the crystal costs more than a suitable synthesized replacement radio, it's time to think about dumping the crystal controlled equipment.

Bob NO6B
 

I'm wanting to say 27-30pF, Bob.

-XC


On Wed, Jan 13, 2021 at 4:33 PM Bob Dengler <no6b@...> wrote:
At 1/13/2021 11:55 AM, you wrote:
>What band MVP??

UHF TX.

I already know the multiplication formulas (TX = X36, RX = X27 - 11.2).? I just need to know the loading capacitance.

W.r.t. QuartSLab: if necessary I may have to place the order, but only because replacing the radio will be more difficult in this particular case.? When the crystal costs more than a suitable synthesized replacement radio, it's time to think about dumping the crystal controlled equipment.

Bob NO6B






 

Tony, I have to agree with what you said, That's what shyed me away from QL.? The vendor in CA, USA, I've been using has been good and they come up with the parameters.?

--
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
-
 

On 1/13/2021 7:33 PM, Bob Dengler wrote:
At 1/13/2021 11:55 AM, you wrote:
What band MVP??
UHF TX.
I already know the multiplication formulas (TX = X36, RX = X27 - 11.2). I just need to know the loading capacitance.
I have some old GE MASTRII training documents and thought that it had the information contained in it, but no.

I think the MASTRII and MVP shared the same crystals, just the oscillator holders were different?

Joe
 

That's correct, Joe. Same formulas & general parameters.

-W6XC


On Wed, Jan 13, 2021 at 6:37 PM Joe <k1ike_mail@...> wrote:
On 1/13/2021 7:33 PM, Bob Dengler wrote:
> At 1/13/2021 11:55 AM, you wrote:
>> What band MVP??
>
> UHF TX.
>
> I already know the multiplication formulas (TX = X36, RX = X27 - 11.2).? I just need to know the loading capacitance.

I have some old GE MASTRII training documents and thought that it had
the information contained in it, but no.

I think the MASTRII and MVP shared the same crystals, just the
oscillator holders were different?

Joe
 

OK, I placed the order this morning. About 1/2 the price of QuartSLab & will take about a month to ship; will let yall know how they work. I told Josef @ Krystaly if their crystals work well he may get a bunch of orders for more.

Bob NO6B
 

pls. keep us updated., this could be good??

jerry VE3EXT

On Sat, 23 Jan 2021 at 16:45, Bob Dengler <no6b@...> wrote:
OK, I placed the order this morning.? About 1/2 the price of QuartSLab & will take about a month to ship; will let yall know how they work.? I told Josef @ Krystaly if their crystals work well he may get a bunch of orders for more.

Bob NO6B






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