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Receive Loop for Field Day Co-interference?
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Seeking advice for “upping my receive game” during Field Day Contest operation this coming summer. ?On Field Day, multiple operators are usually grouped physically (and socially) close but some don’t always respect band schedules & bandpass filters and which means I generally I can talk better than I hear hear because of interstation receive interference. ? On FD I transmit 20-10M bands using a 17’ vertical + Base autocoupler + directional radials all mounted at 10’ AGL that gives fine directional transmit but my receiver is overloaded with other on-site contestors. ? I’m wondering if a receive-only loop located as far away from other antennas (up to 1000’ allowed) and taking advantage of loop directionality might help? 1. ??? -? Would commercial 1M receive loops be directional enough on 10-30M to be helpful? 2. ????? -Would locating the loop to the edge of the 1000’ contest area, far away from other Hams, be woth the effort? 3. ???? - Would the LZ1AQ likely function OK over that 1000’ length of CAT interconnect? Or, maybe a better approach is the rather expensive DX Engineering NCC-2 Receive Antenna Phasing Systems DXE-NCC-2 to null out local noise with a 2nd local-only antenna? ??? ? I’d appreciate anyone’s experience or ideas! ? 73…闯辞丑苍 |
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Hi John,
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I think any active antenna is going to be problematic in a field day environment, especially with simultaneous, high power operation on multiple bands.
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In this instance, I'd suggest that a passive tuned loop (not using varicaps) may be more appropriate, as it would provide additional band pass filtering, and not be so easy to overload.
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A remotely located receiver or SDR may be a better option, but would most likely infringe contest rules.
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Regards,
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Martin
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On Thu, Jan 30, 2025 at 01:01 AM, SparkyG / NQ6Q wrote:
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