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- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!wupost!cs.utexas.edu!not-for-mail
- From: chideste@pt.Cyanamid.COM (Dale Chidester)
- Newsgroups: sci.electronics
- Subject: RCA TAC-200 Parts ID?
- Date: 25 Jan 1993 08:46:06 -0600
- Organization: UTexas Mail-to-News Gateway
- Lines: 30
- Sender: daemon@cs.utexas.edu
- Message-ID: <9301251445.AA02891@nmr1.pt.Cyanamid.COM>
- NNTP-Posting-Host: cs.utexas.edu
-
-
- I have been trying to "reverse engineer" RCA TAC-200 high band channel elements
- to come up with an inexpensive kit. Receive is okay and almost done, but there
- are several parts on the Transmit channel element I cannot identify. They are:
-
- RT1, RT2 and RT3 which have a brown, yellow and black, respectively,
- dots on them. I think these are negative temperature coeficient
- thermistors with values of about 3.5K, 6K and 30K at room temp.
-
- CR1 the tuning diode. Number on it is A1 7567 -1
-
- Q1 a NPN transistor. Numbers on it are 185 593-1 144
-
- Q2 a PNP transistor. Numbers on it are 185 131 183-1
-
- If anyone can help me with the identification of these or provide me with
- information about suitable replacement parts for them, I would be most
- grateful. Please reply via EMAIL to chideste@cyanamid.com.
-
- Thanks and 73
- Dale
-
-
- ------------------------------------------------------------------------
- Dale H. Chidester, PhD N3HAL "Against ignorance, even the
- American Cyanamid Company Gods in vain doth contend."
- Agricultural Research Divison Goethe
- PO Box 400, Clarksville Rd. Phone: (609) 799-0400 x2430
- Princeton, NJ 08543-0400 Email: chideste@cyanamid.com
- ------------------------------------------------------------------------
-