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Thanks, Adrian, as I underused the Dave Slagle is autoformer guy. I have no needs for autoformers as I need purely restive load. I fact it is not big deal to find switch,  it is complicated to find a ready to go attenuator. Mike Percy care many switches with double deck that have a poll with return path that might be used for any T-pad, N-pad, L-pad or even better a bridged-T attenuator. The problem is not with the switch but with finding the necessary set of resistors.

When you calculate the values for 8R L-pad it will be many bogus 3.65 Ohm or 6.73Ohm values. Since I would  like to go for metal film resistors it is imposable to find the necessary, even approximate values. Sure it is possible to parallel them and use many other tricks this but I do not want it. It potential to order the Vishay S102 of the very exact value but for $15 per resistor they are way out of the picture. A good solution would be to get some Nichrome, Kanthal or some other resistive wire and to make own exact values but I would prefer to find out if anyone dose it out there already as I’m sure it is a trivial task for someone. Why not to pay money to the professionals and to have the ready-to-go solution derived to you?

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