[Repeater-Builder] Cable lengths

Here's an excerpt from a TX RX publication that ties in with this discussion Adverse cable length between Duplexer and transmitter using varactor or broadband hybrid combining type transmitter outputs. Even though the Duplexer VSWR is flat on frequency, the reflected impedance of the Duplexer

[Repeater-Builder] Cable lengths again

Have a Phelps Dodge 526 UHF duplexer that's missing the cables from the tee to the cans. Google came up with one vague reference where someone thought these cables were 12 inches long. Is there a chart or formula somewhere to determine their proper length? Thanks, Al, K9SI

Re: [Repeater-Builder] Cable lengths again

Good timing, I just now have one on the bench tune up. This 526 was originally on 454/459MHz. Both cables from the tee to the cans are 12 inches. This is measured from the far end of the N connector on both ends. In other words, it includes the length of the N connector. The 2 cables are

[Repeater-Builder] Cable lengths - critical?

Hi guys. We finally secured a brck type UHF amp for our hamtronics machine. The Hamtronics puts out 7 watts after all the filtering into my Bird Termaline wattmeter. This needs to be knocked down to below 4 watts so as to not over drive the outboard amp. I had 2 options - one is to insert a

[Repeater-Builder] Cable Lengths and Connectors

I am building notch filters for my 6m repeater project (out of 1 5/8 heliax) The connecting cables between the filters are all 1/4 wavelength, per the design instructions. The cable connecting the notch filters to the radio will need to have connectors in the line (to pass through the cabnet,