Messages from the Yahoo group for the Peg are archived at https://www.k5qo.com/yahoo_groups/TenTec_Pegasus_static/index.html#/index. There's a message in the archive that Q3 and Q4 are a matched pair of MRF454's. 73 Chuck --- Chuck Till K4RGN at ARRL.NET Raleigh, Wake County, North Carolina, 27613, USA (FM05pv81)