I am looking at a possible location where the antennas will be 500 feet - maybe a little more from the operating location. Is anyone aware of a 5 band (80-10 meters) multiplexer that would allow simu
It appears that you plan on having all three antennas connected at the same time. I'm not sure how well that will work. John KK9A maybe a little more from the operating location. Is anyone aware of a
Author: Mike DeChristopher <mfdechristopher@gmail.com>
Date: Wed, 9 May 2018 10:43:13 -0400
I have a similar problem at my new QTH. I'm considering a few products from Low Band Systems. They offer a variety of multiplexers depending on what bands you'd like, but I have not yet personally us
Yes I was hoping to run 5 radios at once. Like is commonly done with tribanders - triplexers - bandpass filters now. 73, Joe kk0sd It appears that you plan on having all three antennas connected at t
The question was actually not about feedline. However - what feedline is part of the dialog I think. And whats the cost of feedline vs the more complicated triplexer/pentplexer solution. 500ft is a l
Open-Line is much cheaper and low loss. A couple of good baluns and job done. It is just one more option. 73, Maximo The question was actually not about feedline. However - what feedline is part of t
Author: Timothy Coker via TowerTalk <towertalk@contesting.com>
Date: Wed, 9 May 2018 18:52:07 +0000 (UTC)
Low Band Systems triplexors and quadplexors were in use MSHP during the ARRL DX CW this year from ZF1A. Danny (N6MJ) and John (K6AM) made 6,284 Q's over that 48 hour period using Alpha 78's and a mul
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Wed, 9 May 2018 15:16:51 -0400
Gary, The long feedline plus reject loads will cost you over 3db on the upper bands. If you use LMR600 you could reduce that but the type "N" connector would be a weak point for QRO and DIN connector
Herb: CAT5 is only rated to go 328 feet with gig Ethernet. A better solution would be fiber with fiber to CAT5 at each end. No chance of RF pickup either. You are correct about N connectors being a w
7-16 DIN are fantastic connectors but "N" are really not that bad. I used a number of N connectors at my station. Also if you use 1 1/4 or 1 5/8 Heliax the 500 ft loss is not bad at all on HF. John K
I have no experience with triplexers but it sounds like a bad idea to put 4.5KW (3 bands QRO) through an N connector. I agree, use DIN connectors. 7/8" RFS hardline (LDF5-50 knockoff) is $2.50/ft so
The other big problem with long runs of Ethernet is the increased likelihood of equipment damage due to lightning or ground potential differences. Near strikes can/will blow up the phy or magnetics
The other big problem with long runs of Ethernet is the increased likelihood of equipment damage due to lightning or ground potential differences. Near strikes can/will blow up the phy or magnetics o
The below items are what I was thinking of although none of them seem to cover the 5 "contest" bands. I did see several power levels of 10 - 40 meter quad-plexers. I am assuming they are bi-direction