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Linear Power Amplifier LA-140
(88 - 108 MHz ?)
 

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A Linear Power Amplifier LA-140 for sale.
On the rear side “Made in Japan”, output transistor C2630.

C2630 Datasheet (PDF)

 The housing as a bit rusty, however inside it is clean, so the top and bottom covers can be repainted or the PA module with the heat sink can be installed into the other housing. I am not sure about the frequency band, however after the test I carried our I think it might be FM 88 – 108 MHz Power Amplifier or 70 MHz (!?).

The results of the test:

DC supply: 12 V
***************************************
Input frequency 150 MHz
Input Power 3W from Kenwood TH-79
Output Power 15 W onto 50 Ohm dummy load
***************************************
Input frequency 136 MHz
Input Power 3W from Kenwood TH-79
Output Power 45 W onto 50 Ohm dummy load.
Green LED goes ON
(The 75 W Dummy Load gets warm)
I kept the transmit for 5 Min to test. The power
output was solid - 45 W.
***************************************

I couldn’t go to the lower frequency.

Based on the above test I believe that this PA is for 88 – 108 MHz or
can be tuned down to 70 MHz.
Of course, the power output would be significantly higher.

ON HOLD
(WAITING FOR THE COMPREHENSIVE TEST)

I can now test the amplifier to identify the frequency band. So, it should be back for sale soon.



NEW PM R Watch Transceivers - Set of TWO 
Essential items for scouts or for a family when on holiday!!!
Kids will love it, being in touch with you when needed.

Freetalker walkie talkies,
with a range of up to 1.5 miles/2.5 km.

             

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    446 MHz/8 Channels
    Auto Squelch
    Internal VOX
    12 Hour AM/PM Watch
    Built-in Antenna
    Built-in Speaker/Microphone
    Additional Ear-piece/Mic included
    Backlit LCD display
    Rechargeable 3.7 V Lithium Ion Battery

    UK mains chargers

 £50  FREE P&P 


YAESU FT-41R UHF  Qty-2
with the brand new batteries

Condition: mint.

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Check reviews at: http://www.eham.net/reviews/detail/1467

Information on modification of TX and RX will be included.

£70  + £7.50 P&P 


 

 

 

 

 

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