[ARC5] Product detectors - the name.

[K5MYJ]

I just checked the manuals for the Collins 75A-3 and 75A-4.

The 75A-3 was sold as an AM/CW/FM receiver. The 75A-4 was sold as an AM/SSB/CW receiver.

The 75A-3 did not have what we now call a product detector.

The 75A-4 had both diode(AM) and product(SSB/CW) detectors.

To me the 75A-4 is the first receiver I know of to be designed for SSB.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
  ----- Original Message ----- 
  From: Bruce Long via ARC5 
  To: Richard Knoppow ; arc5 at mailman.qth.net 
  Sent: Thursday, May 11, 2017 9:03 AM
  Subject: Re: [ARC5] Product detectors - the name.


  Richard:
  "The name for something can be so far from its function as to confuse understanding of what it is."




  You mean like breadboard, or choke or condenser or maybe Vcc bus?





------------------------------------------------------------------------------
  From: Richard Knoppow <1oldlens1 at ix.netcom.com>
  To: Bruce Long <coolbrucelong at yahoo.com>; "arc5 at mailman.qth.net" <arc5 at mailman.qth.net> 
  Sent: Wednesday, May 10, 2017 9:33 PM
  Subject: Re: [ARC5] Product detectors - the name.



      I find the same thing interesting. The name for something can be so 
  far from its function as to confuse understanding of what it is. I am 
  glad you taught your students to be careful of language.


  On 5/10/2017 1:26 PM, Bruce Long wrote:
  > Yeah Richard
  >
  > A rose by another name would still smell sweet but possibly confuse the
  > hell out of everyone.  When I was teaching I was a bit of a jerk
  > requiring proper terminology to avoid confusion and clarify technical
  > communications.  A dBm is NOT the same as a dB.
  >

  >

  -- 
  Richard Knoppow
  1oldlens1 at ix.netcom.com
  WB6KBL






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