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Im needing a duplexer

Rwb

tell the devil im gettin there as fast as i can,r
Jun 30, 2018
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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
 

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.
 
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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.
 
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
 
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
 
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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

fire-extinguisher-duplexer.jpg
 
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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
 

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