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View Full Version : Calling all FET gurus...



N8YX
02-03-2009, 08:27 AM
Cross-reference needed.

Dig through your old Motorola manuals and tell me what an SPF796 cross references.

It's a P-channel JFET; matched pair. But I don't know the "standard" part designation.

Motorola did this sh!t for OEMs...SRF2331 was actually a rebranded MRF458 and it was a special run for Heathkit.

Likewise, the -796...for Drake.

Any help would be most appreciated.

N9FE
02-03-2009, 08:38 AM
K9MLD joel is the motorola man.. I'll get ahold of him if he's home.. He Likes to travel to florida when it is cold like now..

n9qip
02-21-2009, 04:51 PM
Hi, Try giving a call to KB9FB Steve Witte. He is a wizz on stuff like this.
Call him during the week at his work (608)249-7778 or e-mail sjwitte@juno.com
Tell him I told you to call.
Best of luck!

Len / N9QIP

WØTKX
02-21-2009, 06:23 PM
Found a cross reference to a Drake part number of all things... ;)

TR7/A 3030355 TRANSISTOR SPF796 MATCHED

From http://www.hamradio.no/la3tq/partlist.pdf

N8YX
03-09-2009, 11:26 AM
Found a cross reference to a Drake part number of all things... ;)

TR7/A 3030355 TRANSISTOR SPF796 MATCHED

From http://www.hamradio.no/la3tq/partlist.pdf

Exactly.

That's a Motorola house number..."Special Purpose FET"...no ready cross-ref. :-|