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AMfone's Online AM Handbook => Restoration => Topic started by: n4joy on February 13, 2020, 08:51:06 PM



Title: Lettine 130 transmitter
Post by: n4joy on February 13, 2020, 08:51:06 PM
Thanks to W3JN and WA4BWO, a Lettine 130 has been added to my Lettine family!  This model is a rare bird indeed as there is almost no information on it outside some QST ads.  Tube compliment is 807s for the oscillator, finals, speech amp, phase inverter, and modulator; two 866 rectifiers; and 6L6 clamper.  The QST ad indicates 120 to 130 watts input.

I will post more photos as the cleanup progresses.


Title: Re: Lettine 130 transmitter
Post by: n4joy on February 13, 2020, 08:54:37 PM
More photos...


Title: Re: Lettine 130 transmitter
Post by: n4joy on February 13, 2020, 08:56:22 PM
Last photo for now...


Title: Re: Lettine 130 transmitter
Post by: w3kbs on February 18, 2020, 06:53:34 PM
Nice Lettine 130.
Have been looking for one for a while or even a 240. I just finished the 6 meter 242 Transmitter and it really does a nice job on 6AM. Put together pretty well for the time period.
Gud luck with her.

w3kbs


Title: Re: Lettine 130 transmitter
Post by: n4joy on February 19, 2020, 07:23:33 AM
Nice Lettine 130.
Have been looking for one for a while or even a 240. I just finished the 6 meter 242 Transmitter and it really does a nice job on 6AM. Put together pretty well for the time period.
Gud luck with her.

w3kbs

Thanks.  The 130 is quite rare and maybe as rare as the 262.  I have amassed a somewhat large collection of Lettines and enjoy restoring and using them.  Information on them is virtually nonexistent outside the old QST ads.  My first was a 242 that I use for a local "net" on 50.4 (Sunday at 7 pm EST).  Lettine also made a VFO and tuner.  I built the VFO unit from scratch (pics posted here) using the schematics.  On a related note, the 240 schematic on Bama is NOT correct, so I will see about posting my scan of an original.

 


Title: Re: Lettine 130 transmitter
Post by: n4joy on March 20, 2020, 10:58:05 PM
I completed the work on my Lettine 130, which included all capacitors and resistors replaced, wiring cleaned up from previous maintenance, new rectifier tubes, and two fresh 807 finals.  I also had to replace the AM/CW switch. 

All works as it should! Output is over 70 watts on 40 meters.


Title: Re: Lettine 130 transmitter
Post by: w3jn on April 02, 2020, 04:14:55 PM
Glad you got it working, and happy it went to someone who really enjoys it.

Sorry that toob got busted in shipping, I thought I stuffed enough paper in the thing to keep that from happening.
AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands