Sunday Mornings at 7:00am

• 7:00am-7:30am: 2m FM Analog on 146.535 MHz. (If 146.535 MHz is in use, we will move to 146.550 MHz.)
• 7:30am-7:45am: Meet on the PAPA System to discuss results of the 2m FM Analog portion of the exercise.
• 7:45am-TDB: 70cm FM Analog on 446.500 MHz. (if 465.500 MHz is in use, we will move to 446.520 MHz.)

Depending on conditions and interest, we may continue on one or more of the following bands and modes:

• 1.25m FM Analog on 223.420 MHz
• 70cm FM DMR on 431.100 MHz, TG99, CC1, TS1
• 2m FM DMR on 145.510 MHz, TG99, CC1, TS1
• 2m SSB on 144.240 MHz

---

---

PAPA Simplex Exercise Participant/Station Location Map. Under Development…

---

Long Range Propagation Forecast: We predict with high confidence that propagation on VHF and UHF will be very good for the foreseeable future. Except when it isn’t. It depends on how far the big red Tropospheric Blob extends inland from the coast. If you’re Elin K6DV, then you don’t need a Tropospheric Blob. When you have elevation, line of sight, and a GP-9, you have Physics on your side. If you’re not Elin, you can click the image below to see the latest Hepburn Tropospheric Ducting Index Forecast.

---

Photos and Videos from Recent Simplex Exercises

2024-12-01 – Kevin K4HD (formerly W6KCO) at CAMP 9 / Nike LA-94C (34.3531, -118.4173, 4020ft). Station: Nissan Xterra All-Terrain Go Kit on Wheels. Bands and Modes: all.

---

2024-12-08 – Logan KD6LLB at CAMP 9 / Nike LA-94C (34.3531, -118.4173, 4020ft). Station: Icom IC-9700, AnyTone D578UVIII, Comet GP-95 antenna on a 35-ft tripod-mounted mast. Bands and Modes: 2m FM AV, 70cm FM AV, 70cm DMR, and 2m SSB.

---

2024-12-22 – Logan KD6LLB at Malibu Bluffs Park (34.0342848, -118.7014510, 200ft). Station: Icom IC-9700, Comet GP-95 antenna on a 35-ft tripod-mounted mast. Bands and Modes: 2m FM AV, 70cm FM AV, and 2m SSB.

---

Lead Net Control Operator – Ivo N6IVO (formerly KO6BKX) in Tustin. Station: ID-5100 and a Diamond X510 antenna. Bands and Modes: 2m / 70cm FM AV.

---

Net Control Operator – Elin K6DV in Camelot Hills. Station: Icom IC-2730 and Comet GP-9 2m/70cm antenna, Kenwood TH-F6 and [unidentified] 1.25m antenna. Bands and Modes: 2m/1.25m/70cm FM AV.

VHF/UHF Antennas in their Natural Habitat

Hepburn Tropospheric Ducting Index

6-Day Forecast of VHF, UHF & Microwave Radio & TV Anomalous Propagation & Interference
https://www.dxinfocentre.com/tropo_wam.html

Tropospheric DX Modes
https://www.dxinfocentre.com/propagation/tr-modes.htm

VHF/UHF Band Plans for Southern California

TASMA Two Meter Area Spectrum Management Association
https://www.tasma.org

TASMA Two Meter FM Band Itinerant Summary
https://www.tasma.org/wp-content/uploads/2022/11/Band-Plan_25Oct2022.pdf

TASMA Digital Voice (DV) Simplex Frequencies Allocation, June 2022
https://www.tasma.org/wp-content/uploads/2022/08/TASMA-DV-Frequencies_June-2022_a.pdf

220 SMA 220 MHz Spectrum Management Association of Southern California
https://www.220sma.org

220 SMA Band Plan
https://www.220sma.org/bandplan.htm

220 SMA Coordinated Repeaters
https://www.220sma.org/smarpt.htm

SCRRBA Band Plans
http://www.scrrba.org/BandPlans/BandPlans.htm

SCRRBA 70cm Band Plan 420-440
https://www.scrrba.org/BandPlans/420-440.pdf

SCRRBA 70cm Band Plan 440-450
http://www.scrrba.org/BandPlans/440-450.pdf

SCRBBA Southern California 431.000-431.225 MHz Expanded Band Plan and Usage
https://www.scrrba.org/BandPlans/431-431.225.pdf

SCRBBA Hotspot Frequency Assignments for Southern California
https://www.scrrba.org/Documents/SCRRBA-Hotspot-Radios.pdf

---

You might also like: PAPA Antenna Show and Tell Events

---