Re: SSB - Electronic SP-23 Preamp


Chris Gill
 

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Technical Data Receive Pre-Amplifier (declared)
^^^ MVV 1296 VOX SSB Electronic SP-23 SSB Electronic SP-23MKII ^^
Frequency Range 1240-1300 1250-1300 1250-1300
MHz
Noise figure typ. 0,8-1,2 1,5 1,5
dB
Amplification typ. 22 20 20
dB
Max. Power (SSB) 180 100 100
Watt
Max. Power (FM) 100 100 100
Watt
Insertion loss < 0,5 0,4 0,4
dB
Supply voltage 13,5 13,5 13,5
V
Power requirement ca. 200 400 400
mA
Mast diameter 56 58 58
mm
Connectors N N N
-
DC Connector RCA (chinch) PL-259 (UC1) PL-259 (UC1)
-
TX RX switching HF-VOX up to 100W
or PTT-controlled
HF-VOX up to 10W
or via DCW-2004 100W
HF-VOX up to 10W
or via DCW-2004 100W
-
Relay CX-120P CX-531N CX-531N  
1st stage MGF1302 MGF1302 MGF1302
-
2nd stage MSA0686 BFG91 ERA-5SM
-
  http://www.shf-elektronik.de http://www.ssb.de http://www.ssb.de
-
Price 239euro   329euro
-
Download Users manual + schematic diagram 3.5MB Schematic of SP23 152kB    



On Sun, 10 Jan 2021 at 18:49, Anthony Coldman via groups.io <anthony.coldman=ntlworld.com@groups.io> wrote:

I have a SP23MKII mats head preamp, its not working.

 

I wonder if anyone has a circuit for it with the component value, I suspect one of the 2 Gas Fet, but unsure on what they are, they seem to be the same possible MGF1302 but not 100% sure.

 

Does anyone have any information that may help. Its quite an old unit so is there a better replacement device available now?

 

Regards Anthony G7LRQ



--
Regards

Chris Gill

+447 806 339 442

Delvin House
g8eem.chris@...

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