Im needing a duplexer

[Rwb]

Prefer 1 that needs jumper coax not the ready made soldered in coax for 2 meters and 70cm.
Not loaded with money but will pay via paypal
Want decent 1 not 1 thats on its last leg

 

[Mudfoot]

The one MFJ makes is a good one.
https://www.dxengineering.com/parts/mfj-916b?seid=dxese1

Source, if'n u don't find one.

 

[Rwb]

The one MFJ makes is a good one.
https://www.dxengineering.com/parts/mfj-916b?seid=dxese1

Source, if'n u don't find one.

Thank you,think i just got 1 spotted

 

[Rwb]

Got 1 thank you w0srb

 

[w0srb]

Your Welcome Rwb

 

[Rwb]

Now we wait on the usps

 

[543_Dallas]

The 200 watt pep rating on the MFJ unit is concerning since most use FM on those bands. The Diamond I have is rated for 1kw pep and 400 watts cw on 2 meters. I would veer on the side of caution and assume the MFJ is good for 80 watts FM. Adequate for most rigs but too close for my comfort.

 

[sunbulls]

Tidbit: In the early days of 2 meter repeaters, many Hams made 2 meter duplexers out of old copper fire extinguishers. At that time, most of them were either cheap buys or given away. Original copper extinguishers now fetch buku bucks as a high demand item, especially among retired firemen.

 

[Rwb]

The 200 watt pep rating on the MFJ unit is concerning since most use FM on those bands. The Diamond I have is rated for 1kw pep and 400 watts cw on 2 meters. I would veer on the side of caution and assume the MFJ is good for 80 watts FM. Adequate for most rigs but too close for my comfort.

only a 25 watt radio no amp,im safe

 

[Rwb]

Tidbit: In the early days of 2 meter repeaters, many Hams made 2 meter duplexers out of old copper fire extinguishers. At that time, most of them were either cheap buys or given away. Original copper extinguishers now fetch buku bucks as a high demand item, especially among retired firemen.

i was going to build 1 but seen how much parts cost,can buy a pricy diplexer for less. Actually they are diplexers not duplexers. Suprized nobody got me on that 1 haha

 

[sunbulls]

My brain is still wired to old school Duplexers. Ha! For reference, this is a photo of a 2 meter 6 cavity Duplexer made from fire extinguishers. For those that don’t understand the difference between Du and Di, this Ham provides a good explanation.

http://ae6pm.com/SCCARA-GRAM_Articles/Duplexers_Diplexers_Circulators.pdf

 

[Rwb]

My brain is still wired to old school Duplexers. Ha! For reference, this is a photo of a 2 meter 6 cavity Duplexer made from fire extinguishers. For those that don’t understand the difference between Du and Di, this Ham provides a good explanation.

http://ae6pm.com/SCCARA-GRAM_Articles/Duplexers_Diplexers_Circulators.pdf

View attachment 39980

thats what i read long ago diplexer is for a uhf port and vhf port on dual band radios in 2 meters and 70 cm with 1 port for dual band antenna.
Duplexers are for a radio broadcasting on oh say 146.600 and recieve on 147.200 with a transmit port and recice port plus a port for single band antenna