Hi Paul, I think you are confusing impedance and resistance here. There is an infinite number of resistance and reactance combinations that will equal 50 ohms impedance but the only ones with low vsw
Heath SB-1000 and Ameritron AL-80 are pi-L on 160 & 80, pi above that. SB-200/SB201/SB-220/SB-221, Drake L4 and L7 are pi-network. Ameritron ALS-600 is a solid state amp with lowpass filter outputs (
Dentron Clipperton-L is pi-network on all bands. * 73's Jim W5IFP * w5ifp@gvtc.com _______________________________________________ _______________________________________________ TowerTalk mailing li
No confusion. To achieve that 50 +j0 result at the source end of a 1/8-wave line still requires a 50 +j0 termination. However, no matter what is happening on the load end of the line and as long as
That would be some pretty awful coax -- Belden's RG8X (9258) is only 6.6dB/100 ft at 400 MHz, and a decent RG8-sized coax is on the order of 3dB/100 ft. Yes, an infinitely long line looks like a resi
Looks like solid dielectric RG-213 is about 5dB/100' at 432 MHz, Jim. Gerald, you must have lost a factor of 2 somewhere (200' ft of RG-213 would have 10dB one-way loss). Coax with a foamed polyethyl
Jim, you are right, it was a 200 ft length for 432 MHz and 100 ft for higher frequencies. This is a great application for old RG8 coax that has gone bad. 200ft of new RG213 measures right at 4.5 dB/1
You are exactly right Mike. Most of my measurements have been on 1296 MHz in recent years and that is where the 100ft cable is used. I use two 100ft cables for 432MHz, 73, Gerald K5GW In a message da