Make your own SMA fixed attenuators that perform decently from 50 Khz to 1.2/1.3 Ghz.
Below are the resistors ordered from DigiKey. Be sure to order extra as they easily get lost!
Use 2 same value paralleled resistors for RA and R1/R2 (See schematic and chart in video).
Use a tiny spec of instant glue to hold them together.
1/2W SMD resistors are easier to work with than 1/8W while using tweezers to set them in place.
DigiKey Part # Description Reference
P143AACT-ND 143 OHM 1% 1/2W 1210 10 dB - RA
RMCF1210FT191 191 OHM 1% 1/2W 1210 10 dB - R1/R2
RMCF1210FT121 121 OHM 1% 1/2W 1210 20 dB - R1/R2
RMCF1210FT499RCT-ND 499 OHM 1% 1/2W 1210 20 dB - RA
541-590AACT-ND 590 OHM 1% 1/2W 1210 3 dB - R1/R2
RMCF1210FT34R8CT-ND 34.8 OHM 1% 1/2W 1210 3 dB - RA
541-301AACT-ND 301 OHM 1% 1/2W 1210 6 dB - R1/R2
RMCF1210FT75R0CT-ND 75 OHM 1% 1/2W 1210 6 dB - RA