Home |
Search |
Today's Posts |
#21
|
|||
|
|||
"'Doc" wrote in message ... H., When you find out that the aluminum/copper base makes no difference at all, can I have the one you don't want? 'Doc So you have done the measurements? And no, I'm gonna run two screwdrivers; Then I can talk to myself. ;^)))))))))) H. |
#22
|
|||
|
|||
Cecil Moore wrote in message ...
Mark Keith wrote: "H. Adam Stevens, NQ5H" wrote: band Hustler Screwdriver 103"/BugCatcher/54" 80 21 ohms 9 ohms 23 ohms I really thought the huge bug catcher would do better. I'm not sure if I'm getting the problem. Is the bugcatcher failing to perform? With that much whip and base section, the bugcatcher coil probably had shorted turns to raise the resonant frequency. It is well known that shorted turns on a high-Q coil lowers the Q. (Try a shorted turn on an iron core choke.) Shouldn't be that big a deal. I have some number of shorted turns on mine all the time. Doesn't seem to hurt mine too much. Also my normal "mast" is only wire . Not having a thick mast doesn't seem to hurt much either in my case. Dunno...It still seems weird to me. That bugcatcher should be the clear winner, unless the screwdriver is about the same height, coil position, etc. MK |
#23
|
|||
|
|||
"Mark Keith" wrote in message om... Cecil Moore wrote in message ... Mark Keith wrote: "H. Adam Stevens, NQ5H" wrote: band Hustler Screwdriver 103"/BugCatcher/54" 80 21 ohms 9 ohms 23 ohms I really thought the huge bug catcher would do better. I'm not sure if I'm getting the problem. Is the bugcatcher failing to perform? With that much whip and base section, the bugcatcher coil probably had shorted turns to raise the resonant frequency. It is well known that shorted turns on a high-Q coil lowers the Q. (Try a shorted turn on an iron core choke.) Shouldn't be that big a deal. I have some number of shorted turns on mine all the time. Doesn't seem to hurt mine too much. Also my normal "mast" is only wire . Not having a thick mast doesn't seem to hurt much either in my case. Dunno...It still seems weird to me. That bugcatcher should be the clear winner, unless the screwdriver is about the same height, coil position, etc. MK I thought so too. Must be the dirty threads. Not at all realistic anyway. I used the same bugcatcher configuration with a roof mount on a Pontiac in 1970; worked great but not in motion. H. NQ5H |
#24
|
|||
|
|||
"Crazy George" wrote in message ...
I played with the Hustler when it was introduced, and got the impression it was a loser 40 years ago. I now wonder if that lower mast is purposely lossy. Or maybe just accidentally lossy and they ran with it. Looks good on SWR meters which hams are infamous for. The hustlers I tried had pretty lossy coils. I've never seen any problems with the solid masts, but I've never tried the folding type. In theory, they should be ok also, unless they have a problem with dirt or corrosion. But the coils.... I hate those things....I once did a comparison using a large 80m resonator against the coil on my homebrew plastic bugcatcher. It wuz ugly...My homebrew coil was much less lossy. I'll never use a hustler coil for anything serious. And being I'm always serious, that means never... :/ MK |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Inverted ground plane antenna: compared with normal GP and low dipole. | Antenna | |||
Mobile Ant L match ? | Antenna | |||
Poor quality low + High TV channels? How much dB in Preamp? | Antenna | |||
QST Article: An Easy to Build, Dual-Band Collinear Antenna | Antenna |