Hello Jerry,

I have build home made attenuators using 0.6 W leaded metal film resistors.
E.g. 10 and 12 dB attenuators are flat +\- 0.1 dB up to 150 MHz and from 150 - 300 MHz +\- 0.3 dB.
They are excellent.

This are resistors costing 2 Eurocent per hundred.

73,
Roelof, pa0rdt