antenna audio quality voodoo

[209 first class]

ok, i see the rotten tomatoes and cabbage flying through the air, but i have read of such nonsense before and heard people saying it doesnt exist ( example :jo gunn making audio claims about thier antennas), at my station 2 antennas do indeed sound different. maco m106 horizontal , maco v 5/8 vertical. the beam is thinner sounding and the vertical more warm and rich sounding. i thought i had noticed before, but the other day when i spent over an hour finding just the right capicitor for a tone control on my mic,and when i switched over to the beam it was less bassy and i had to friggin start over again finding a new cap to kill off more treble cuz it was too thin. ieven recorded it (thru another cb)to be sure i was not hearing things. is it just my station or has anyone else recorded thier antennas to check for differences? 2zero9

[drdx]

That is extremely interesting. I wonder if it is a polarity related quality, meaning that if you're receiving it via a crossed polarization path, if it effects it. I guess if you're listening to it on a close by radio in your shack, it blows that out of the picture. Maybe it is an antenna feedpoint resistance/impedance/swr type issue, where the radio is seeing a slightly different load, and that load is causing the signal to change in some way, effecting audio. Or..... ground?

-drdx

[pipsqueek]

Hi 209. I don't know about the audio quality of different antennas but with a single channel 15 band eq, you wouldn't have to do the cap swap thing. Just adjust the eq to tailor each individual mic or antenna. Running your mic through a tube like a 12ax7 first really warms the audio.
Just remember the radios we use will usually only pass 200 to about 2400Hz of audio without some mods. Some older tube type pass a good range and the ft-101 can really be fattened up with the audio mods done.
ps.....nice mic collection there.
pips

[bullet]

pipsweek how do you wire the mic in and out he EQ. I have a 20 band sitting around I may check out.

[lonesome 500]

actually it is surface area.....of radiation which makes it heard more...

ie; a 4 element...17' long with 1/4'' dia elements....vs. a 4 element...17' long with 1'' elements......same but diff.....which is ''louder''?

....polarity and waveform that travels down feed line...and the pure ''formation'' of the radiated wave is more than likely the cause of audio ''heard'' differentiation

many factors to figure.

true horiz radiation.......what is the exact angle being radiated ....true 180 degree is tough to achieve.

element diameter

etc.

[pipsqueek]

Hey Bullet. You have to snip off the mic connector, install whatever your eq has on input (sometimes a 1/4" 2 conductor plug). Just pick up audio and ground, audio on the tip and ground on the sleeve of the plug. Run it into any external audio gear. Now to the radio....

You have to set up a ptt. What I do is come out of a mic connector with 2 wires. One wire conductor hooks to the mic+(audio) and another conductor to the ground pins of the mic connector and the end of that wire goes to the audio gear. The other wire conductors connects to the ground pin and ptt pin. Now whenever you short those conductors, you will have keyed the mic. You can use a footswitch, a doorbell button mounted on your table, or any other type momentary switch to key up. A toggle type can work too, this way you can reach for a delightful beverage and the mic will stay keyed.

Hope this helps.
pips

[causmik]

Hey Bullet. You have to snip off the mic connector, install whatever your eq has on input (sometimes a 1/4" 2 conductor plug). Just pick up audio and ground, audio on the tip and ground on the sleeve of the plug. Run it into any external audio gear. Now to the radio....

You have to set up a ptt. What I do is come out of a mic connector with 2 wires. One wire conductor hooks to the mic+(audio) and another conductor to the ground pins of the mic connector and the end of that wire goes to the audio gear. The other wire conductors connects to the ground pin and ptt pin. Now whenever you short those conductors, you will have keyed the mic. You can use a footswitch, a doorbell button mounted on your table, or any other type momentary switch to key up. A toggle type can work too, this way you can reach for a delightful beverage and the mic will stay keyed.

Hope this helps.
pips

Check this out pips. That is exactly what I do and get some amazing sound. My tube pre amp is not in line at this time, though. Will be back in line soon.

Mike

[pipsqueek]

Hi Causmik. Nice set-up. I bet that Audio- Technica mic sounds sweet. Looks like Dave Letterman's mic. That board looks handy for patch-ins too. I have a DAP 600 that was salvaged from a defunct AM broadcast station that I have yet to hook in to the system. Gonna have a blast with that. Mike Dorrough's best Discreet Audio Processing unit , imho.
pips

[causmik]

The mixer has six inputs. I do have fun with my PC and CB combo. A little background ambiance, etc not to mention unlimited audio clips. That At 2020 sounds great when run through the processor.

Mike