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MISC - SDR Guardian Antenna Sharing Controller I make these antenna sharing controllers because there is positively NOTHING on the market that even comes close. Period! Full manual at http://w1mm.com/sdrg/SDRG_Manual.pdf YouTube video demo at​ https://youtu.be/i0pmxehTbG4 Specs: Max pwr: 100W PEP Isolation relay switching: Fully preemptive, bidirectional Preempt delay adj: 25-250mS (50mS default) PTT input polarity: - (default) or + (5-12v) CW mode: Semi break-in Semi break-in decay: 0.1-1.0 seconds Isolation: >135db (140db typical. Yes, really) LNA gain: 5db from 160-6m (SDR output only) Fail-safe trigger voltage: ~250mV peak (-2dbm or 0.6mW) Fail-safe clamp response time: -45db within ~35nS, -135db within 10mS.​ $239 ea., free USPS priority S&H (US only). Outside US, S&H extra. Cash App or Venmo preferred. Paypal if you twist my arm. More pics at my QRZ page, W1MM. 7 units in stock for immediate sale, 15 more in the pipeline. Listing #1760141 by W1MM Submitted on 02/25/26 Submitted from 32-219-38-150.bng02.wtrb.ct.ip.frontiernet.net Click to Contact Back to Previous Page

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