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THE AM BULLETIN BOARD => Technical Forum => Topic started by: ka3zlr on July 20, 2009, 07:47:40 AM



Title: Crystals for White Face and Black Face Johnsons
Post by: ka3zlr on July 20, 2009, 07:47:40 AM
Good Morning,

 I'm Just wonderen again where I could Find Someone who knows someone or something that would make 29 Mhz crystals for these small wonderful little rigs.


73
Jack.


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: Jim, W5JO on July 20, 2009, 09:49:24 AM
Jack I believe you are asking if anyone makes crystals for the little Johnson CB rigs in the 29 Mc range.

http://www.icmfg.com/

http://www.jancrystals.com/



Title: Re: Crystals for White Face and Black Face Johnsons
Post by: Ed-VA3ES on July 20, 2009, 09:50:46 AM
Get a service manual to start. That will tell you the crystal formulas you'll need to order crystals. 

Alternatively, examine any existing crystals to determine operating characteristics:  TX frequencies, (crystal frequency and operating), IF frequency, and receive characteristics (frequencies), etc. 

JAN Crystals is still in business:  http://www.jancrystals.com/

An altenative is asking around for suitable crystals. I have a small trove of 10M crystals for CB's. I'm sure  others do as well.



Title: Re: Crystals for White Face and Black Face Johnsons
Post by: ka3zlr on July 20, 2009, 10:30:09 AM
Got that covered Ed I rebuilt both of them an they're In very fine shape I might add I was Just asken if anybody has some or Help,.. Jan I forgot about Jan....Oh well...But if anyone has any rocks for these rigs they might to sell or trade be a big Help.

Thanks
Jack.


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: Ed-VA3ES on July 20, 2009, 10:37:41 AM
What's the IF freq.?   Straight 3rd overtone, 9 mc rocks?   


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: ka3zlr on July 20, 2009, 11:19:31 AM
Ed,

As per the manual, "Transmitter and receiver crystals are 3rd overtone series mode type with the receiver operating 455 Kc's below  the Transmitter Frequency" if that helps any..but 29 Mc's and one crystal 455 kcs below would be just fine.

I think I'll call Jan tomorrow an work on this right now I'm waiting on the Electrical Lineman from the Power company, seems I have a loose fitting either on the pole or at the Tap...my lights have been blinking bright and dark all weekend...They say it's on our side..as always..sometimes it's hectic living on a Farm ... :D

73
Jack.



Title: Re: Crystals for White Face and Black Face Johnsons
Post by: Jim, W5JO on July 20, 2009, 11:23:33 AM
Jan and International both have all the information they need to make these crystals on file.  Just give them the "channnel frequency".


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: ka3zlr on July 20, 2009, 11:27:30 AM
Why Thank You Jim That's what I'm looking for OM...Thank You a Bunch.

73
Jack.


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: Jim, W5JO on July 20, 2009, 12:06:19 PM
Always glad to help a fellow ham Jack.


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: Ed-VA3ES on July 20, 2009, 12:10:54 PM
I'd order up 29.000,  29.010 and 28.990 to start.  That should cover you.  You can always order up more.

BTW - haw many channels are these rigs?



Title: Re: Crystals for White Face and Black Face Johnsons
Post by: ka3zlr on July 20, 2009, 12:17:39 PM
Fellas..It's wonderful to be here I know I'm a Drag most times me and this Dang Chemo...But the Crystals are ordered,.. It's Great Man I can put my little tube rigs on the air In style Like we like to do..Man Many Thanks..The Girl at International Knew after a Bit of hunting what I needed and I ordered Double Copies...to Have Man this makes my whole Day...Finally i can put these little Girls on the air...Next I'll just need to find a little amp for a little power and Bango...I"ll be in full AM Style..and NO 10 meter Junk...Yea....that's the best..


Ed they're little Johnson white Faces 5 Channels


Thank You.

73
Jack.





Title: Re: Crystals for White Face and Black Face Johnsons
Post by: Ed-VA3ES on July 20, 2009, 12:52:30 PM
Jack, I have  just the "leenyar"  you need:   A "Thunderbolt 350", runs  three 6LQ6 driven by one.  About 300W plus output with 5W drive!   ;)     :P

Or is it a "linyerd"?    "Lungyard?    I've heard it called by all these monikers.


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: ka3zlr on July 20, 2009, 12:54:25 PM
Yer Killing me Ed....Ya know that...LOLOL..... :D


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: ke7trp on July 20, 2009, 01:20:52 PM
I have a bag of these Xtals. What Xtral Freq do you need?

C


Title: Re: Crystals for White Face and Black Face Johnsons
Post by: WBear2GCR on July 20, 2009, 07:18:43 PM

White face? Black face?

Black face I know.
That's Al Jolson!!

 :P

           _-_-bear
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