Milestone-Proposal talk:Neutrodyne Circuit, 1922: Difference between revisions

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Revised Text:  The Neutrodyne Circuit invented on this site in 1922 used neutralizing capacitors to eliminate squeals from parasitic oscillation that plagued early radios. Improved clarity of reception and easier tuning facilitated broader radio adoption by the general public. Multiple manufacturers licensed the circuit to make affordable consumer products, expanding the marketplace from amateur radio operators into a mass consumer market for news, information, music and culture.
Revised Text:  The Neutrodyne Circuit invented on this site in 1922 used neutralizing capacitors to eliminate squeals from parasitic oscillation that plagued early radios. Improved clarity of reception and easier tuning facilitated broader radio adoption by the general public. Multiple manufacturers licensed the circuit to make affordable consumer products, expanding the marketplace from amateur radio operators into a mass consumer market for news, information, music and culture.
== Expert Letter #1 -- [[User:Jbart64|Jbart64]] ([[User talk:Jbart64|talk]]) 19:59, 16 September 2019 (UTC) ==
To: Julia & David Bart <jbart1964@gmail.com>
Re: Neutrodyne Circuit Invention at Stevens Institute
From:  James Kreuzer <wireless@pce.net>  9/16/2019 2:37 PM (10 minutes ago)
NEW WIRELESS PIONEERS
1541 BRONSON ROAD
GRAND ISLAND, NY 14072
716-773-4999    WIRELESS@PCE.NET
To: IEEE Milestone Committee      September 19, 2019
I have been the Librarian and Assistant Curator for the Antique Wireless Association (AWA) for the past 10 years. I have been a rare book dealer for 35 years and a wireless historian since 1975. I have written numerous historical articles for the AWA Journal and AWA Review throughout the years. 
I have examined the Milestone Proposal for the Neutrodyne Circuit, 1922 and completely support the recognition of a circuit that has had a profound historical significance for American communications at the dawn of the broadcast era. 
At the AWA Museum, we have been given the honor to preserve many receivers and components relating to the original Neutrodyne circuit, and I personally have built and have helped troubleshoot many receivers employing this circuit. Without the invention of this circuit, the development of the broadcasting industry would have been delayed, as the receivers that employed the existing regenerative circuit were difficult to use.  In addition, replacement circuits were regularly needed to keep up with the rapid developments of newly designed broadcast transmitters. Thus, prior to the Neutrodyne Circuit, the audience for radio largely comprised amateurs, or technical hobbyists who possessed a specialized understanding of radio operations.
The Neutrodyne Circuit opened the door to licensing a generalized, standard circuit to manufacturers who then developed a range of radio products at reduced costs for the general public.  This enabled the rapid expansion of radio beginning in the early/mid-1920s into a mass consumer marketplace. Although other factors also aided this product expansion and the growth in consumer demand, the Neutrodyne Circuit is widely credited as the key technical driver of this change.
I believe that it is entirely fitting as we near the 100th anniversary of this momentous achievement that the IEEE would choose to honor the Neutodyne Circuit with their Milestone Award.
I fully support the milestone proposal and the wording of the claim is accurate.
Best Regards,
James Kreuzer N2GHD

Revision as of 19:59, 16 September 2019

Milestone Proposal - Neutrodyne Circuit -- Jbart64 (talk) 17:44, 23 May 2019 (UTC)

I fully support this Milestone but the wording needs editing. I would indicate the circuit was developed on this site rather than assigning credit to Hazeltine. The circuit was actually developed by Harold Wheeler in Hazeltine's laboratory at Stevens Institute. So, although Hazeltine is usually named as the developer, the accomplishment is not strictly his. Milestones should avoid personal identification in favor of recognizing the general achievement. My suggested version of the Milestone is shown below.

The Neutrodyne Circuit was invented on this site in 1922. It used neutralizing capacitors to eliminate squeals and other noise that plagued earlier tuned-radio-frequency (TRF) receivers. The circuit made radios easier to tune and improved the clarity of reception; facilitating broader use by the general public, enabling new manufacturers to develop different products, and helping to grow radio the industry from amateur radio operators into a mass consumer market. Dave Bart

Updated Milestone Text -- Jbart64 (talk) 19:46, 16 September 2019 (UTC)

I understand the following updated text for the plaque will be posted. I concur with these revisions after consultation with the proposer. Dave Bart, Advocate

Revised Text: The Neutrodyne Circuit invented on this site in 1922 used neutralizing capacitors to eliminate squeals from parasitic oscillation that plagued early radios. Improved clarity of reception and easier tuning facilitated broader radio adoption by the general public. Multiple manufacturers licensed the circuit to make affordable consumer products, expanding the marketplace from amateur radio operators into a mass consumer market for news, information, music and culture.

Expert Letter #1 -- Jbart64 (talk) 19:59, 16 September 2019 (UTC)

To: Julia & David Bart <jbart1964@gmail.com> Re: Neutrodyne Circuit Invention at Stevens Institute From: James Kreuzer <wireless@pce.net> 9/16/2019 2:37 PM (10 minutes ago)

NEW WIRELESS PIONEERS 1541 BRONSON ROAD GRAND ISLAND, NY 14072 716-773-4999 WIRELESS@PCE.NET

To: IEEE Milestone Committee September 19, 2019

I have been the Librarian and Assistant Curator for the Antique Wireless Association (AWA) for the past 10 years. I have been a rare book dealer for 35 years and a wireless historian since 1975. I have written numerous historical articles for the AWA Journal and AWA Review throughout the years.

I have examined the Milestone Proposal for the Neutrodyne Circuit, 1922 and completely support the recognition of a circuit that has had a profound historical significance for American communications at the dawn of the broadcast era.

At the AWA Museum, we have been given the honor to preserve many receivers and components relating to the original Neutrodyne circuit, and I personally have built and have helped troubleshoot many receivers employing this circuit. Without the invention of this circuit, the development of the broadcasting industry would have been delayed, as the receivers that employed the existing regenerative circuit were difficult to use. In addition, replacement circuits were regularly needed to keep up with the rapid developments of newly designed broadcast transmitters. Thus, prior to the Neutrodyne Circuit, the audience for radio largely comprised amateurs, or technical hobbyists who possessed a specialized understanding of radio operations.

The Neutrodyne Circuit opened the door to licensing a generalized, standard circuit to manufacturers who then developed a range of radio products at reduced costs for the general public. This enabled the rapid expansion of radio beginning in the early/mid-1920s into a mass consumer marketplace. Although other factors also aided this product expansion and the growth in consumer demand, the Neutrodyne Circuit is widely credited as the key technical driver of this change.

I believe that it is entirely fitting as we near the 100th anniversary of this momentous achievement that the IEEE would choose to honor the Neutodyne Circuit with their Milestone Award.

I fully support the milestone proposal and the wording of the claim is accurate.

Best Regards, James Kreuzer N2GHD