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From: "mal hamilton" <g3kevmal@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <002801cc7e08$6e9ec9c0$0401a8c0@xphd97xgq27nyf> <4E839D14.5080105@telus.net> <002f01cc7e84$49295490$0401a8c0@xphd97xgq27nyf> <004901cc7ebd$3d0db910$0401a8c0@xphd97xgq27nyf> <4E849D17.3030607@telus.net>
Date: Thu, 29 Sep 2011 17:44:23 -0000
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Subject: Re: LF: Wilkinson combiner
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Tnx info Scott
mal/g3kev
----- Original Message -----=20
From: Scott Tilley=20
To: rsgb_lf_group@blacksheep.org=20
Sent: Thursday, September 29, 2011 4:30 PM
Subject: Re: LF: Wilkinson combiner
Hi Mal
This was the original 2 port design I used to combine two 500W amps. =
Works fine. Steve, VE7SL uses this design done as well for his 1KW amp.
http://www3.telus.net/sthed/argo/wilk/
A possible benefit is that the combiner elements provide very good low =
pass filtering so you may not need a separate filter. Make sure the LO =
chain of both amps is shared.
This design should be fine for your application and won't need =
ferrite.
73 Scott
VE7TIL
On 9/29/2011 8:34 AM, mal hamilton wrote:=20
Components would need to be hefty to handle two amps each one =
several hundred watts to get 1w erp on 137
Maybe the decca approach is better with just a transformer, 3 =
primary winding and one output winding, their method handles 1.2 K/watts =
without any strain.
g3kev
----- Original Message -----=20
From: mal hamilton=20
To: rsgb_lf_group@blacksheep.org=20
Sent: Thursday, September 29, 2011 8:46 AM
Subject: Re: LF: Wilkinson combiner
Scott
Two amplifiers to combine to one output. 2 ports in 1 port out
de mal/g3kev
----- Original Message -----=20
From: Scott Tilley=20
To: rsgb_lf_group@blacksheep.org=20
Sent: Wednesday, September 28, 2011 10:17 PM
Subject: Re: LF: Wilkinson combiner
Hi Mal
How many ports?
I personally prefer air core coils but iron dust work better =
than ferrite for this application. Amidon #3 is the best.
Once I know the number of ports I can give you values.
Regards,
Scott
On 9/28/2011 10:59 AM, mal hamilton wrote:=20
LF/MF Is anyone using a wilkinson combiner with LF =
amplifiers and if so what are the optimum paramaters for ferrite =
cores/windings
73 de mal/g3kev
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3DISO-8859-1">
<META content=3D"MSHTML 6.00.2600.0" name=3DGENERATOR></HEAD>
<BODY text=3D#000000 bgColor=3D#ffffff>
<DIV><FONT face=3DArial>Tnx info Scott</FONT></DIV>
<DIV><FONT face=3DArial>mal/g3kev</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dsthed475@telus.net href=3D"mailto:sthed475@telus.net">Scott =
Tilley</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Drsgb_lf_group@blacksheep.org=20
=
href=3D"mailto:rsgb_lf_group@blacksheep.org">rsgb_lf_group@blacksheep.org=
</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Thursday, September 29, =
2011 4:30=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: LF: Wilkinson =
combiner</DIV>
<DIV><BR></DIV>Hi Mal<BR><BR>This was the original 2 port design I =
used to=20
combine two 500W amps. Works fine. Steve, VE7SL uses this =
design=20
done as well for his 1KW amp.<BR><BR><A class=3Dmoz-txt-link-freetext=20
=
href=3D"http://www3.telus.net/sthed/argo/wilk/">http://www3.telus.net/sth=
ed/argo/wilk/</A><BR><BR>A=20
possible benefit is that the combiner elements provide very good low =
pass=20
filtering so you may not need a separate filter. Make sure =
the LO=20
chain of both amps is shared.<BR><BR>This design should be fine for =
your=20
application and won't need ferrite.<BR><BR>73=20
Scott<BR>VE7TIL<BR><BR><BR><BR>On 9/29/2011 8:34 AM, mal hamilton =
wrote:=20
<BLOCKQUOTE cite=3Dmid:004901cc7ebd$3d0db910$0401a8c0@xphd97xgq27nyf=20
type=3D"cite">
<META content=3D"MSHTML 6.00.2600.0" name=3DGENERATOR>
<DIV><FONT face=3DArial>Components would need to be hefty to handle =
two amps=20
each one several hundred watts to get 1w erp on 137</FONT></DIV>
<DIV><FONT face=3DArial>Maybe the decca approach is better with just =
a=20
transformer, 3 primary winding and one output winding, their method =
handles=20
1.2 K/watts without any strain.</FONT></DIV>
<DIV><FONT face=3DArial>g3kev</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- =
</DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dg3kevmal@talktalk.net =
href=3D"mailto:g3kevmal@talktalk.net"=20
moz-do-not-send=3D"true">mal hamilton</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
title=3Drsgb_lf_group@blacksheep.org=20
href=3D"mailto:rsgb_lf_group@blacksheep.org"=20
moz-do-not-send=3D"true">rsgb_lf_group@blacksheep.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Thursday, September =
29, 2011=20
8:46 AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: LF: Wilkinson=20
combiner</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial>Scott</FONT></DIV>
<DIV><FONT face=3DArial>Two amplifiers to combine to one output.=20
2 ports in 1 port out</FONT></DIV>
<DIV><FONT face=3DArial>de mal/g3kev</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- =
</DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dsthed475@telus.net href=3D"mailto:sthed475@telus.net" =
moz-do-not-send=3D"true">Scott Tilley</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
title=3Drsgb_lf_group@blacksheep.org=20
href=3D"mailto:rsgb_lf_group@blacksheep.org"=20
moz-do-not-send=3D"true">rsgb_lf_group@blacksheep.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, =
September 28, 2011=20
10:17 PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: LF: =
Wilkinson=20
combiner</DIV>
<DIV><BR></DIV>Hi Mal<BR><BR>How many ports?<BR><BR>I personally =
prefer=20
air core coils but iron dust work better than ferrite for this=20
application. Amidon #3 is the best.<BR><BR>Once I know the =
number=20
of ports I can give you =
values.<BR><BR>Regards,<BR>Scott<BR><BR><BR>On=20
9/28/2011 10:59 AM, mal hamilton wrote:=20
<BLOCKQUOTE =
cite=3Dmid:002801cc7e08$6e9ec9c0$0401a8c0@xphd97xgq27nyf=20
type=3D"cite">
<META content=3D"MSHTML 6.00.2600.0" name=3DGENERATOR>
<STYLE></STYLE>
<DIV><FONT face=3DArial>LF/MF Is anyone =
using a=20
wilkinson combiner with LF amplifiers and if so what are the =
optimum=20
paramaters for ferrite cores/windings</FONT></DIV>
<DIV><FONT face=3DArial>73 de mal/g3kev</FONT></DIV>
=
<DIV> </DIV></BLOCKQUOTE><BR></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE>=
<BR></BLOCKQUOTE></BODY></HTML>
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