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VHF RMS Packet setup - VARA FM vs traditional AX.25 performance comparison

Planning to set up a VHF RMS gateway on 145.090 MHz and weighing VARA FM versus traditional packet radio options. VARA FM uses efficient FEC/ARQ protocol with significant speed improvement over traditional packet radio - over 2X faster than 9600 baud packet and automatically shifts speed levels based on signal quality. RMS Packet supports both AX.25 packet and VARA FM using single or multiple radios through TNCs, soundcard programs or soft modems. What's the real-world throughput difference in message handling? Any compatibility concerns with older client stations still running packet-only setups?

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Don't set up VARA FM on a popular packet channel! Traditional KISS drivers have timing issues with RMS Packet default settings causing collisions, while AGWPE driver works better despite more complex setup. Run dual-mode if you want both protocols.

Running VARA FM gateway here for 18 months - the speed difference is dramatic, especially for ICS forms and longer messages. In VHF testing, VARA FM significantly outperformed AX.25/FX.25 packet modes. Just ensure your duty cycle stays reasonable for continuous operation.

New to digital modes but researching gateway options. The free VARA version has speed limitations and no P2P connections, while the paid version ($69 for both HF and FM) removes restrictions. Is the license fee worth it for gateway operations versus sticking with free packet radio?

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