[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: 23 cm xmit converter design question

Zack Lau wrote:
> Watch out for local oscillator spurs and unwanted signal paths.
> Imagine what happens if 3 watts from an IF rig is only attenuated
> by 70 dB when it hits the input of -25 dBm to +13 dBm amplifier.
> (Poorly designed single board transmit converter)
> RF design is much easier when you put each circuit in its own
> shielded box with filtered supply leads.--Zack W1VT

Also:  It's a good practice to make sure you have good impedence
matching between sections.  I use 1-dB 50-ohm pads between all
sections/stages for that  purpose.

Gerry -- n5jxs