Re: [Elecraft] [OT] Duplexer/Diplexer

2017-12-27 Thread Phil Kane
On 12/27/2017 8:10 AM, George Pasek wrote: > Now I’m thinking of using two HF/VHF Duplexers (or Diplexer as they are also > called) Not the same. A duplexer is used to permit simultaneous transmit and receive functions in an application such as a repeater. A diplexer is used to combine the

Re: [Elecraft] [OT] Duplexer/Diplexer

2017-12-27 Thread Jim Brown
Exactly right!  And MUCH more than "a bit fussy" -- these are passive networks, and ALL passive networks depend on both source and load impedances being right. Don't expect something like this to work right (or handle power) with non-resonant antennas. 73, Jim K9YC On 12/27/2017 9:18 AM, Bob

Re: [Elecraft] [OT] Duplexer/Diplexer

2017-12-27 Thread Bob McGraw K4TAX
You will need a duplexer on each ends of the coax.   Preferably these should be identical.    One at the bottom end to combine the HF and VHF signals to one coax and then on the top end to split the HF and VHF signals to feed each respective antenna.   Do be mindful that these units are  a bit

Re: [Elecraft] [OT] Duplexer/Diplexer

2017-12-27 Thread Fred C. Jensen
Used triplexers for years, HF, 2, 70 cm, one run to tower, worked great. I think mine were Comet. Just watch the SEE with higher power. Fred K6DGW George Pasek wrote: >2 Radios, 2 Antennas, 1 Coax. > >That pretty much says it all. I currently have a KX3 and a 2-meter rig

[Elecraft] [OT] Duplexer/Diplexer

2017-12-27 Thread George Pasek
2 Radios, 2 Antennas, 1 Coax. That pretty much says it all. I currently have a KX3 and a 2-meter rig (but I’ll probably be outfitting the KX3 with 2m’s in the future) and I use a HamSticks for HF or a 1/4 wave GP for 2 meters. Running another coax here is not a option (apartment) so I have