[ARC5] HS-33
D C _Mac_ Macdonald
k2gkk at hotmail.com
Fri Aug 9 17:18:23 EDT 2019
Since it appears that "modern" receivers simply put the headphones in a jack that breaks the line to the speaker, a 600 Ohm impedance would probably not "load" that audio output very much.
To me, the HS phones are horribly uncomfortable to wear as my ears have a considerable protrusion of cartilage but what I have was all I could afford back in 1956!
I got a set of crystal (probably) high impedance phones from my grandfather to use with my Walter Ashe WAR-25 regen receiver as a Novice! I suspect he had had them since the 1920s!
I also have a Roanwell headset w/ boom mic from my days on a B-52 crew in the mid-1960s. Receivers are H-443/AIC and mic (dynamic) is M-87/AIC. I don't have the four-conductor female jack to receive the plug on the headset.
73 de Mac, K2GKK/5
Since 30 Nov 1953
Oklahoma City, OK
USAF, Retired ('61-'81)
FAA, Retired ('94-'10)
________________________________
From: arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> on behalf of Kenneth G. Gordon <kgordon2006 at frontier.com>
Sent: Friday, August 9, 2019 14:50
To: Joseph Orgnero <josepho at shaw.ca>
Cc: ARC5 at mailman.qth.net <ARC5 at mailman.qth.net>
Subject: Re: [ARC5] HS-33
On 9 Aug 2019 at 12:42, Joseph Orgnero wrote:
> Thank you Ken for the info.
> I was curious as to whether the HS-23 or HS-33 were designed for specific
> equipment.
> It appears that is a matter of "taste"!
> 73's
>
> Joe Orgnero VE7LBI
Well, not necessarily, Joe. The output impedances of the various mil receivers changed
over the course of WWII.
600 ohms became, at least for the Navy, the defacto "standard", but there were still many
receivers in use which showed output impedances higher than that.
Higher impedance does give you greater audio sensitivity, and I prefer them for that.
Also the crystal-radio crowd swears by them. For them, the higher the better.
My best phones right now are a set of those from a sound-powered deck-talker set.
The difference in greater audio sensitivity between those and my set of ANB-H1s is quite
apparent.
However, I used a set of HS-33s (600 ohm) with my RAL-7 for many years and liked them.
Ken W7EKB
______________________________________________________________
ARC5 mailing list
Home: https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Farc5&data=02%7C01%7C%7C00a8ffe30db64ef2d73708d71d02cdad%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637009770185144378&sdata=bsQsVBQ35KTso8Rmc4ZzslCXIU3LJD4%2B52DAuodiIsE%3D&reserved=0
Help: https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C00a8ffe30db64ef2d73708d71d02cdad%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637009770185144378&sdata=6QOO%2Bot9mscqjeYcPdJ4TpH6fNZsP5WvU0O5v%2BBuBsE%3D&reserved=0
Post: mailto:ARC5 at mailman.qth.net
This list hosted by: https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net&data=02%7C01%7C%7C00a8ffe30db64ef2d73708d71d02cdad%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637009770185144378&sdata=1GzcyVg6O47fybcPz0qE%2FvJZ%2FjHB2dA6alisiyCwby4%3D&reserved=0
Please help support this email list: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C00a8ffe30db64ef2d73708d71d02cdad%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637009770185144378&sdata=u506iNrzvRv3FoHPPx3LreumsLBhu9FYC61erNQawDU%3D&reserved=0
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20190809/ee45eb43/attachment-0001.html>
More information about the ARC5
mailing list