Diplexer design


John Fell
 

Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


Andy G4JNT
 

Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


John Fell
 

FB OM. Its wet here today so Monday is fine ....

John

On Thu, 11 Oct 2018 at 15:56, Andy TALBOT <andy.g4jnt@...> wrote:
Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


SAM JEWELL
 

Tonna free software ‘diplexer’. Together with Elsie filter design.

Sam, G4DDK


On Thursday, October 11, 2018, 3:56 pm, Andy TALBOT <andy.g4jnt@...> wrote:

Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


John Quarmby
 

Try here John:

http://www.tonnesoftware.com/

Scroll down to a program called Diplexer

73

John G3XDY


On 11/10/2018 14:50, John Fell wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


Virus-free. www.avast.com


Andy G4JNT
 

Off the top of my head, without using any design tools :

2GHz path  10pF from common port to LO input.    1/4 wave of wire close wound on say 3mm dialmeter from there to deck

144MHz path, bit trickier, but if match isn't important, try 4 turns 6mm diameter  common port to 144MHz port.  Then 10pF to groud.
That gives you a basic high-pass low pass diplexer

Separate out DC at 144 - say 1nF and 200nH and another 1nF to decouple DC line
...  that turns it into a triplexer

 




On Thu, 11 Oct 2018 at 16:01, John Fell <john.g0api@...> wrote:
FB OM. Its wet here today so Monday is fine ....

John

On Thu, 11 Oct 2018 at 15:56, Andy TALBOT <andy.g4jnt@...> wrote:
Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


SAM JEWELL
 

That should be Tonne software, of course.

On Thursday, October 11, 2018, 4:09 pm, SAM JEWELL via Groups.Io <jewell@...> wrote:

Tonna free software ‘diplexer’. Together with Elsie filter design.

Sam, G4DDK




Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 3:56 pm, Andy TALBOT <andy.g4jnt@...> wrote:

Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


Richard <richard@...>
 

On Thu, 2018-10-11 at 15:50 +0100, John Fell wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining
144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to
masthead from shack (will carry 12V DC @ 300mA on same coaxial cable
run)for personal Beacon use.
73
John
G0API
Hi John
Depending on what type of mixer you are using at masthead, you may not
need to separate the two frequencies, then that just leaves getting the
DC off the feeder which is much easier .
Unless the diplexer is very efficient you will end up with 144 and 2256
on either port with just the levels changed, then when you recombine at
the mixer the will probably be a phase difference between the original
components
_._,_._,_
--
Best wishes /73
Richard Bown

Email : richard@...

HTTP : http://www.g8jvm.com

######################################################################

Ham Call: G8JVM . QRV: 50-432 MHz + Microwave
Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
QRV 6mtrs 200W, 4mtrs 150W, 2mtrs 300W, 70cms 200W,
Microwave 1296MHz 140W, 2320MHz 100W & 10368MHz 5W
OS: Linux Mint 19 x86_64 Tara, on a Dell Inspiron N5030 laptop
######################################################################


John Fell
 

Thanks for ideas folks .The combined feed will go to a 1992 built G3WDG TX mixer , 2556MHZ for the 1/4 LO and 144MHZ to wobble the output with a few milli Watts to feed to small PA module .
Will let you know if and when it works.
At least in the shack the reduced height slotted WG antenna pattern looks better than before the hacksaw was applied yesterday and the large soldering iron today.
Such Fun.
73
John
G0API

PS IO80 worked IO90 one way via 10GHZ EME last Monday -G4RFR TX , M0EYT RX - is this a First ?

On Thu, 11 Oct 2018 at 17:01, Richard <richard@...> wrote:
On Thu, 2018-10-11 at 15:50 +0100, John Fell wrote:
> Has anyone got a 50 Ohm Diplexer design suitable for combining
> 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to
> masthead from shack (will carry 12V DC @ 300mA on same coaxial cable
> run)for personal Beacon use.
> 73
> John
> G0API
>
Hi John
Depending on what type of mixer you are using at masthead, you may not
need to separate the two frequencies, then that just leaves getting the
DC off the feeder which is much easier .
Unless the diplexer is very efficient you will end up with 144 and 2256
on either port with just the levels changed, then when you recombine at
the mixer the will probably be a phase difference between the original
components
> _._,_._,_
--
 Best wishes /73
 Richard Bown

 Email : richard@...

 HTTP  :  http://www.g8jvm.com

 ######################################################################

 Ham Call: G8JVM . QRV: 50-432 MHz + Microwave
 Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
 QRV 6mtrs 200W, 4mtrs 150W, 2mtrs 300W, 70cms 200W,
 Microwave 1296MHz 140W, 2320MHz 100W & 10368MHz 5W
 OS: Linux Mint 19 x86_64 Tara, on a Dell Inspiron N5030 laptop
 ######################################################################






John Worsnop
 

TonnE 

Not Tonna.......

On Thu, 11 Oct 2018, 16:09 SAM JEWELL via Groups.Io, <jewell=btinternet.com@groups.io> wrote:
Tonna free software ‘diplexer’. Together with Elsie filter design.

Sam, G4DDK




Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 3:56 pm, Andy TALBOT <andy.g4jnt@...> wrote:

Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


SAM JEWELL
 

On Thursday, October 11, 2018, 5:51 pm, John Worsnop <johnworsnop@...> wrote:

TonnE 

Not Tonna.......

On Thu, 11 Oct 2018, 16:09 SAM JEWELL via Groups.Io, <jewell=btinternet.com@groups.io> wrote:
Tonna free software ‘diplexer’. Together with Elsie filter design.

Sam, G4DDK




Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 3:56 pm, Andy TALBOT <andy.g4jnt@...> wrote:

Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


John Worsnop
 

Bugger you then. Only trying to help!


On Thu, 11 Oct 2018, 18:11 SAM JEWELL via Groups.Io, <jewell=btinternet.com@groups.io> wrote:
Know all!
Sam



Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 5:51 pm, John Worsnop <johnworsnop@...> wrote:

TonnE 

Not Tonna.......

On Thu, 11 Oct 2018, 16:09 SAM JEWELL via Groups.Io, <jewell=btinternet.com@groups.io> wrote:
Tonna free software ‘diplexer’. Together with Elsie filter design.

Sam, G4DDK




Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 3:56 pm, Andy TALBOT <andy.g4jnt@...> wrote:

Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API


Andy G4JNT
 

Language , Timothy

From the senior moderator :-)


On Thursday, 11 October 2018, John Worsnop <johnworsnop@...> wrote:
Bugger you then. Only trying to help!

On Thu, 11 Oct 2018, 18:11 SAM JEWELL via Groups.Io, <jewell=btinternet.com@groups.io> wrote:
Know all!
Sam



Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 5:51 pm, John Worsnop <johnworsnop@...> wrote:

TonnE 

Not Tonna.......

On Thu, 11 Oct 2018, 16:09 SAM JEWELL via Groups.Io, <jewell=btinternet.com@groups.io> wrote:
Tonna free software ‘diplexer’. Together with Elsie filter design.

Sam, G4DDK




Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 3:56 pm, Andy TALBOT <andy.g4jnt@...> wrote:

Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API



--
Andy 'JNT (out walking)


SAM JEWELL
 

Ohhhhhh!
Sam





On Thursday, October 11, 2018, 6:51 pm, John Worsnop <johnworsnop@...> wrote:

Bugger you then. Only trying to help!

On Thu, 11 Oct 2018, 18:11 SAM JEWELL via Groups.Io, <jewell=btinternet.com@groups.io> wrote:
Know all!
Sam



Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 5:51 pm, John Worsnop <johnworsnop@...> wrote:

TonnE 

Not Tonna.......

On Thu, 11 Oct 2018, 16:09 SAM JEWELL via Groups.Io, <jewell=btinternet.com@groups.io> wrote:
Tonna free software ‘diplexer’. Together with Elsie filter design.

Sam, G4DDK




Sent from Yahoo Mail for iPad

On Thursday, October 11, 2018, 3:56 pm, Andy TALBOT <andy.g4jnt@...> wrote:

Simple enough.   Estimate 3 small Ls and a handful of ceramic Cs

But you'll have to wait until after the Convention for a design from here ...



On Thu, 11 Oct 2018 at 15:50, John Fell <john.g0api@...> wrote:
Has anyone got a 50 Ohm Diplexer design suitable for combining 144MHZ @ 3dBm with 2256MHZ @ 10dBm .Need to use single feeder run to masthead from shack (will carry 12V DC @ 300mA on same coaxial cable run)for personal Beacon use.
73
John
G0API