Re: Tayloe mixer, was H mode mixer

[Sverre Holm-2]

WB6QRN wrote:
> And just to confuse things even more, what about the Tayloe mixer?

I don't know about the H-mode mixer, but the Tayloe mixer has been patented
by Motorola.

"Product detector and method therefor" was filed in 1998 and granted in 2001
as US patent 6,230,000. See
<http://www.google.com/patents?id=FsIGAAAAEBAJ&dq=US+6230000>


73

Sverre
LA3ZA

Unofficial Guide to K2 Modifications
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[Brian Lloyd-6]

On May 11, 2007, at 6:04 PM, Sverre Holm wrote:

> WB6QRN wrote:
>> And just to confuse things even more, what about the Tayloe mixer?
>
> I don't know about the H-mode mixer, but the Tayloe mixer has been  
> patented
> by Motorola.
>
> "Product detector and method therefor" was filed in 1998 and  
> granted in 2001
> as US patent 6,230,000. See
> <http://www.google.com/patents?id=FsIGAAAAEBAJ&dq=US+6230000>

Ah, too bad. It seems like nothing good comes of patents these days.

73 de Brian, WB6RQN
Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com


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[I7SWX]

Hi,

I may have missed some messages

Message: 11
Date: Sat, 12 May 2007 03:04:02 +0200
From: Sverre Holm <[hidden email]>
Subject: Re: [Elecraft] Tayloe mixer, was H mode mixer
To: [hidden email]
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=us-ascii

WB6QRN wrote:
> And just to confuse things even more, what about the
Tayloe mixer?

I don't know about the H-mode mixer, but the Tayloe
mixer has been
patented
by Motorola.

"Product detector and method therefor" was filed in
1998 and granted in
2001
as US patent 6,230,000. See
<http://www.google.com/patents?id=FsIGAAAAEBAJ&dq=US+6230000>


> The origin of the Tayloe mixer has been questioned
several time on this side of the pond.

> In the 70s in Technical Topics column of Radio
Communication, or at that time still called RSGB
Bulletin, a similar circuit was published by a G-Ham.
It was an SSB Modulator for an HF phased transmitter.
It used CMOS ICs. I do not remember if it did use
CD4053 or something similar.
The improvement on the Tayloe mixer came with the use
of FST3253

73

Gian
I7SWX

73

Gian
I7SWX

73

Sverre
LA3ZA



 
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[Geoffrey Mackenzie-Kennedy-2]

Also in QEX  March / April 2003 page 21.

Perhaps we should close this OT thread before Eric barks :-)

Geoff
GM4ESD


----- Original Message -----
From: "Giancarlo Moda" <[hidden email]>
To: <[hidden email]>
Sent: Saturday, May 12, 2007 5:29 PM
Subject: Re: [Elecraft] Tayloe mixer, was H mode mixer



> The origin of the Tayloe mixer has been questioned
> several time on this side of the pond.


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