On 12/31/18 6:26 PM, Keith Lueck wrote: > Looking at the schematic, I see the input limiter is a 709 opamp > running open loop. Try one of these: <http://www.ti.com/lit/ds/symlink/ne5534a.pdf> Available at Digikey for $0.98 -- "I am a river to my people." Jeff-1.0 WA6FWI www.foxsmercantile.com