Ok, here's the story.
I have an old COBRA 139 which works excellantly on it's own. with a stock mic. or with my cheap power mic. Great radio for local xmit and rec.
Here's what I'm trying to accomplish.
I picked up a PALOMAR TX100 Broad Band 3-30MHz Bi-Linear Amp, hooked it up to a PYRAMD PS-3KX power supply (Fully Regulated, 115VAC, 60Hz, Output: 13.8VDC 2.5 AMP Constant, 3AMP Surge) for in house use. I also am using a Radio Shack SWR/Power Meter, going out to a home brew 8'8" dipole, built to spec. ("I've established 2:1 SWR) The Palomar, lights up and when I dead key, reads 150W PEP on the meter (AM) and of course fluctuates according to voice on SSB. So the boost is there at the meter, however, people receiving me say that my voice sounds muffled. So, I installed a PARA DYNAMICS PC1089 LOW PASS FILTER, thinking that would help but I still have a problem.
Does the AC vs DC situation cause the interfereance? Should I use an antenna tuner? Is the COBRA's output sufficient for the Bi-Linear to function properly? I have all heavy coax jumpers between the radio, the amp, the filter and the meter, with 50ohm going out to the antenna.
Here's the line-up: Radio>Amp.>Filter>Meter>Antenna.
I am not a formally trained tech., so if I seem a little dense with my knowledge or lack of it, you'll know why and perhaps be kind enough to assist me. I know that there are many variables when doing this sort of set-up.
Mike
I have an old COBRA 139 which works excellantly on it's own. with a stock mic. or with my cheap power mic. Great radio for local xmit and rec.
Here's what I'm trying to accomplish.
I picked up a PALOMAR TX100 Broad Band 3-30MHz Bi-Linear Amp, hooked it up to a PYRAMD PS-3KX power supply (Fully Regulated, 115VAC, 60Hz, Output: 13.8VDC 2.5 AMP Constant, 3AMP Surge) for in house use. I also am using a Radio Shack SWR/Power Meter, going out to a home brew 8'8" dipole, built to spec. ("I've established 2:1 SWR) The Palomar, lights up and when I dead key, reads 150W PEP on the meter (AM) and of course fluctuates according to voice on SSB. So the boost is there at the meter, however, people receiving me say that my voice sounds muffled. So, I installed a PARA DYNAMICS PC1089 LOW PASS FILTER, thinking that would help but I still have a problem.
Does the AC vs DC situation cause the interfereance? Should I use an antenna tuner? Is the COBRA's output sufficient for the Bi-Linear to function properly? I have all heavy coax jumpers between the radio, the amp, the filter and the meter, with 50ohm going out to the antenna.
Here's the line-up: Radio>Amp.>Filter>Meter>Antenna.
I am not a formally trained tech., so if I seem a little dense with my knowledge or lack of it, you'll know why and perhaps be kind enough to assist me. I know that there are many variables when doing this sort of set-up.
Mike
