Part of our The Icom IC-7300 Mark II: The Complete Guide.
Split operation is standard practice for serious DX pileups, and the Mark II’s dual receive and improved RMDR make it a genuinely good platform for working them cleanly.
Setting up split
Engage split from the touchscreen, assigning your transmit frequency to one VFO while you monitor the DX station’s frequency on the other. Set your transmit VFO to where you’re actually calling within the listening range, and double check it before keying up, calling directly on the DX station’s frequency in a split pileup just adds to the chaos.
Where the improved receiver actually helps
The Mark II’s improved RMDR means strong nearby signals in a crowded pileup cause noticeably less blocking on your receiver than they would on a radio with weaker dynamic range. In a dense pileup with dozens of stations calling close together, that translates to being able to actually pick out individual signals rather than everything blurring into noise.
Reading the pileup before you call
Listen for a few exchanges before transmitting. Most DX operators announce a listening range, and calling outside it wastes your transmission. Watch where successful stations are actually being worked within that range, there’s often a pattern to where the operator is focusing.
Calling technique that works
Call your callsign once, cleanly, not repeated. Time your call right after the previous exchange ends. If you’re not getting picked, adjusting your timing or position within the listening range usually helps more than just getting louder.
Quick pileup checklist
- Confirm split is engaged and your transmit VFO is set correctly before calling.
- Listen a few exchanges before your first call to learn the pattern.
- Call once, cleanly, timed right after the previous exchange closes.
- Use the improved receiver dynamic range to your advantage in dense, crowded pileups.
None of this is about the loudest signal. It’s about being clean, well-timed, and actually listening more than you transmit, and the Mark II’s receiver genuinely makes the listening part easier.