[AMRadio] Dreaded D-104

Thu Oct 6 19:10:32 EDT 2011

Well said and which has happened to my voice, from Cancer treatments

73
Jack
KA3ZLR

________________________________
From: David Knepper <collinsradio at comcast.net>
To: Discussion of AM Radio in the Amateur Service <amradio at mailman.qth.net>
Sent: Thursday, October 6, 2011 12:21 PM
Subject: Re: [AMRadio] Dreaded D-104

Just remember that you can have a great mike but a lousy voice.

David Knepper, W3CRA/W3ST
Collins Radio Associaton - Join Today
www.collinsra.com
Editor of the Collins Journal
Secretary of the Collins Radio Association
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----- Original Message ----- 
From: "Bob Macklin" <macklinbob at gmail.com>
To: "Jack Dayton" <ka3zlr1 at yahoo.com>; "Discussion of AM Radio in the 
Amateur Service" <amradio at mailman.qth.net>
Sent: Thursday, October 06, 2011 10:18 AM
Subject: Re: [AMRadio] Dreaded D-104

> I'm just curious?
>
> Does anyone know how to measure the characteristics of a microphone. I 
> don't
> suspect many (if any ) hams have what it takes to measure the
> characteristics of a microphone.
>
> Most of the measurements hams could do would be subjective.
>
> Bob Macklin
> K5MYJ
> Seattle, Wa.
> "Real Radios Glow In The Dark"
>
> ----- Original Message ----- 
> From: "Jack Dayton" <ka3zlr1 at yahoo.com>
> To: "Discussion of AM Radio in the Amateur Service"
> <amradio at mailman.qth.net>
> Sent: Thursday, October 06, 2011 4:57 AM
> Subject: Re: [AMRadio] Dreaded D-104
>
>
> You can say that Rob but all elements are not equal each has it's own
>
> distinctive personality.Through the years I have amassed a collection
> of heads and spent a great deal of time with the Scope going through
> them I noticed some interesting responses. One of the reasons I pulled
> the element out replaced it. the HC5 does a much finer job.
>
> 73
> Jack
> KA3ZLR
>
>
>
> ________________________________
> From: Rob Atkinson <ranchorobbo at gmail.com>
> To: Discussion of AM Radio in the Amateur Service 
> <amradio at mailman.qth.net>
> Sent: Wednesday, October 5, 2011 11:29 PM
> Subject: Re: [AMRadio] Dreaded D-104
>
> they probably sound "tinny" when they are mismatched for the rig's
> audio input stage.
>
> My recommendation is go to hamfests looking for D104s.   But not any
> one. ignore the ones with coiled cords, preamps in the base, gold
> leaf, "special editions," and "eagles" and look for the oldest
> crustiest ones you can find. They are pretty easy to take apart and
> clean up. If they lack PTT that's even better.   At the Indianapolis
> Hamfest last summer there must have been at least 30 of them for sale.
> It seemed every other table had at least one; many had half a dozen.
> If you find an old one it might go for 20 bucks. That's probably your
> best bet for finding a ceramic old Astatic high Z element. Obviously
> you'll have to buy more than one unless you get lucky.
> That's the only way I know of. I tried buying a vintage 10 meg xtal
> element tape recorder mic and doing a transplant but you get into
> issues trying to get a non-D104 element to fit and it usually doesn't
> work out. I wound up breaking the cartridge I had trying to get it to
> fit.
>
> Rob
> K5UJ
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