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--- 215 [2007/02/14 21:38]
n5na
+++ 215 [2020/07/24 15:37] (current)
n5na [Mods, Fixes, & Additional Info]
@@ Line 1: / Line 1: @@
 ====== Microphone Model 215 ======
-{{215.jpg|}}
+{{215.jpg?150|}}
 ===== Description =====
-Ceramic type for hand held or desk top operation.  Includes cable, 3-circuit plug, PTT switch, and separate desk stand.  Offers optimum articulation, free of power peaks, impervious to temperature and humidity changes.
+Ceramic type for hand held or desk top operation.  Includes cable, PTT switch, and separate desk stand.  Offers optimum articulation, free of power peaks, impervious to temperature and humidity changes.
+===== Mods, Fixes, & Additional Info =====
+  *{{215.pdf|Specs and Switch Conversion}}
 ===== Specifications =====
-  *High Impedance
+  ***Element:** Ceramic
-  *200 - 4000 Hz response
+  ***Impedance:** High
-  *-50 dB level
+  ***Response:** 200 - 4000 Hz
-  *Die Cast Zinc and Cycolac(r)
+  ***Level:** -50 dB level
-  *8.5" High
+  ***PTT Switch:** SPDT
+  ***Cable:** 4', one conductor shielded, two conductors unshielded
+  ***Case:** Die-cast Zinc and Cycolac(r)
+  ***Base:** Die-cast Zinc
+  ***Color:** Gray front, black back, gray stand
+  ***Height:** 8.5" in base
+  ***Weight:** Mic - 11 oz, base - 13 oz.
 ==== 215P ====
   *In addition to above - 3-circuit (P)hone plug included.
 ==== 215PC ====
   *In addition to above - 4' coiled (C)able, single conductor shielded, two conductors unshielded.
+===== 215, 215P, and 215PC Explained =====
+By W8EK from the Ten-Tec Reflector, September 29, 1999:
+When Al Kahn left Electrovoice and formed TenTec, he took with him the
+rights (and I think even the dies, etc.) for this mic.  I don't
+remember the EV number, but the same mic was used by Drake with a
+number of their rigs.  I do not recall Heath using it, but my memory
+may not be complete.
+TenTec sold the mic a variety of ways.  The 215 is the number for the
+plain mic and die cast base.  The 215 P, had a 1/4 inch stereo plug on
+it (P for Plug), that was used with the Trition, Argonaut, Omni, etc.
+at the time.  These all had a standard cord on them.  Some time after
+the Triton series of rigs, TenTec came out with the 215 PC, which had
+a plug and a coiled cord on it.  The coiled cord worked better with
+the Omni, but the Triton and Argonaut need a "non coiled" cord to
+reach the connector in the back.
+In addition, there were 2 different color schemes.  One was a gray
+color.  Later models were more of a chocolate brown.
+The mic could also be a 214 mic.  The outside looks exactly the same
+as the 215, but inside is an electrolet condenser mic element.  This
+mic element required a small (about 8 to 12 volts at less than 1 ma)
+polarizing voltage.  In order to get this voltage, TenTec went to the
+pin connector that was very common at the time.  This worked fine,
+with a ground pin, mic audio, PTT, and the polarizing voltage.  In
+some cases it was necessary to "find" a polarizing voltage.  This was
+usually done with a 1 K resistor to the 12 V DC supply, with the
+resistor acting more as an isolation resistor than anything else.  It
+was also for protection, in case someone connected the 12 V DC pin to
+something nasty (like the ground pin by mistake!).
+To the best of my memory, all 214 mics had a coiled cord, and 4 pin
+plug, and were the chocolate brown color.  The 214s would occasionally
+pick up RF, so a small RF choke was added inside the mic case.  I do
+not remember any 215s having the RFI problem.
+The freq response of both of these mics were great.  TenTec furnished
+a sample of the curve with the instruction sheet of the mic.
+,
+Ken, W8EK
+Ken Simpson

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