"Changing R92 and R99 from 270 to 220 Ohms lowers the gain a bit. “ Clifford Heath. > On 15 Sep 2025, at 12:04 pm, Steve Haynal wrote: > > Hi All, > > If you are replacing

HL2 PA R92 and FETs > > Ok, R92 has burnt but the FET appears to be ok. What could be the cause ? > I'm probably going to replace the AFT05MS003's with AFT05MS004's

resistor (R92) and the other side > 270R resistor (R99). > When I adjust the Bias up from 0. > Bias 0 is unmoving at 3.5mA, Bias 1 rises to about 60mA and then jumps > to over an

requires changing R92 and R99 from 270 Ohm >> > to 220 Ohm. See these posts as well as the thread the >> > posts are in: >> > >> > https://groups.

by adjusting R92 and R99. Search this group for R92 https://groups.google.com/g/hermes-lite/search?q=R92 - As Christoph suggests, populate the preamp/PA attenuator R94, R100

Recently I had this idea, to combine two PCBs into one. Specifically Hermes-Lite 2.0 + N2ADR Filter Card. I drew a new PCB named HERMES TRX. [image:

changed the R92/99 and only properly biased and it looked very well indeed on spectrum analyser. I gues that with proper bias and PureSignal, this will produce better signal than some

The additional cable should have no effect on the output signal. It does, however, damp the input signal by about 3 dB since the feedback is parallel

Hello everyone. I found an example of including the B50612 chip. I would like to discuss a couple of questions: - In HL2 and some other circuits, the

Hi Group, Attached is a preliminary BOM for beta5. This BOM only includes components that the assembly house will install. There is now a wiki page

values of R92 and R99 and had previously replaced b97 and b105. > I may be chasing a wil-o-wisp in that putting the LPF cleans up the signal. > > Jack > > On Sunday, September

Hi All, The BOM generation scripts are working for PDFs. These scripts allow me to create custom BOMs for different build options, different suppliers,

Hello List, Although I'm not quite at the end of my to do list, I want to put the design files out for final review. Here is how you can help: -

rest, R92, R99, T3, etc. are as already in the schematic) > > bias was 100 mA per device with Vdd = 7.5 V, and 110 mA per device > with Vdd = 9 V (I didn't bother readjusting it

Hi Group, The latest schematics are attached to this post as well as on github and on Google Drive . They contain the new power supply. The Cyclone IV