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#1
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I feel about an idiot in asking this, I should know the answer. It is about
some BCB dxing. When I listen to the BCB I can choose between a couple real affective loops and I'm privy to about as much wire as I feel like rollong out on the ground, I used a tad over 700 ft. last night. My question is: Can the wire be used *with* the loop also? I was thinking of hooking the run of wire to the loop. Will this work? Is there another combo with the antennas I used for the BCB that I can use to squeeze a little more? TIA |
#2
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![]() GO BEARCATS wrote: I feel about an idiot in asking this, I should know the answer. It is about some BCB dxing. When I listen to the BCB I can choose between a couple real affective loops and I'm privy to about as much wire as I feel like rollong out on the ground, I used a tad over 700 ft. last night. My question is: Can the wire be used *with* the loop also? I was thinking of hooking the run of wire to the loop. Will this work? Is there another combo with the antennas I used for the BCB that I can use to squeeze a little more? There is a way to phase the loop against the wire, but I'll defer to someone who has used that technique in BCB dx'ing. Try a Google on 'loop phasing', that will give you a start. dxAce Michigan USA http://www.iserv.net/~n8kdv/dxpage.htm |
#3
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My question is: Can the wire be used *with* the loop also? I was thinking
of hooking the run of wire to the loop. Will this work? Is there another combo with the antennas I used for the BCB that I can use to squeeze a little more? There is a way to phase the loop against the wire, but I'll defer to someone who has used that technique in BCB dx'ing. Try a Google on 'loop phasing', that will give you a start. dxAce Michigan USA Geeze Steve, that was quick. ;-) I didn't see why it couldn't be done. On the one loop, I have two brass screws and I was thinking of #1 running the wire to the screw on the loop or #2 running the wire to the receiver with the loop right there. {?} I'm sure if I tried it that something would come of it. Radio on a lazy susan with a 30x30 loop connected to the table with maybe the other loop being used also AND the long run of wire. {?} Just wanted to know before I go through setting all that up. |
#4
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![]() GO BEARCATS wrote: My question is: Can the wire be used *with* the loop also? I was thinking of hooking the run of wire to the loop. Will this work? Is there another combo with the antennas I used for the BCB that I can use to squeeze a little more? There is a way to phase the loop against the wire, but I'll defer to someone who has used that technique in BCB dx'ing. Try a Google on 'loop phasing', that will give you a start. dxAce Michigan USA Geeze Steve, that was quick. ;-) I didn't see why it couldn't be done. On the one loop, I have two brass screws and I was thinking of #1 running the wire to the screw on the loop or #2 running the wire to the receiver with the loop right there. {?} I'm sure if I tried it that something would come of it. Radio on a lazy susan with a 30x30 loop connected to the table with maybe the other loop being used also AND the long run of wire. {?} Just wanted to know before I go through setting all that up. To properly phase the loop you'll need a phasing unit, but I'm sure you'll see that after doing the Google. Though I'm certain that hooking the wire up directly somehow it will have an effect upon reception. dxAce |
#5
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Try a Google on 'loop phasing', that will give you a start.
btw, thanks for the google tip |
#6
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GO BEARCATS wrote:
My question is: Can the wire be used *with* the loop also? I was thinking of hooking the run of wire to the loop. Will this work? Is there another combo with the antennas I used for the BCB that I can use to squeeze a little more? I am confused as to how you are coupling the loops to your radio? Are you using a communications receiver or a portable? Are you coupling a tuned loop with only the primary winding to a portable via inductive coupling and rotating the pair on a lazy susan? Yes, a loop can be phased against a long wire or beverage/BOG type antennas. A loop used for phasing against another antenna must be a broadband loop, usually an amplified untuned loop or a Q-spoiled loop. The sharpness of the traditional box loop's tuning causes a gain change across it's passband that makes it impossible to use the effects of the phaser to properly cancel out the target signal you are trying to eliminate. Because of the high Q of the box loop, the gain across the narrow passband is not uniform. This causes the phaser to null out the carrier of the target station and not fully null the sidebands, leaving the Donald-Duck sound of an SSB signal remaining. Q-spoiling on the loop eliminates this issue at a slight penalty in sensitivity. Some commercial ferrite loops have a switch to broaden the tuning to allow correct operation with a phaser. Rick Kunath |
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