[TenTec] 125 HZ filter interest

[nellieparkinson]

Hi, in reply to W3TX idea on a 125 Hz filter sounds great.
I have a ladder filter circuit from elektor using 1 Mhz xtals and has about 100 hz bandwidth about -6db. I have thoughts that this could be included in another PBT circuit with a fet ?? to replace the insertion loss, at 9 Mhz using a 8 Mhz Xtal, the problem is shifting the xtal frequency + or - a few Khz. T T sure go into getting clean xtal osc frequencies before mixing signals at the PBT side. The cost of 1 Mhz xtals is alot less than 6.3 Mhz.
When I had the Corsair not the Corsair 2, I used to replace the 1st IF ssb filter with a 500 hz filter I used with the Argosy, it would need some kind of relay switching or 2 transceivers?? 73 de ian G3YRQ