receiver uses T2 not T1. Is it T1 or T2 shich has open wires? Either can be wound on a standard core, and that is probably the easiest replacement option. See the old Hermes-Lite docs for

this larger T2. Some people remove T2 and replace with this BN43-2402 as it has better performance on the VLF bands. Search this list for T2: https://groups.google.com/g/hermes-

Hi All – Tom, K2TC here So for those that are interested – no credit on my part, as the base files came from Ramon a while back, and straight out of

3 of T2, there are large pads on the PCB where these can be >>> measured. >>> >>> Also, there are cases where the TR relay fails and is stuck in TX and >>

Hi Phil – Here is the front 55mm endplate file set that I have been using with the 12mm hole. This Ramon had shared, and it matches back to the

Hi Reid, First of all, I want to thank you for all the time and effort you've invested into enhancing and customizing Thetis for the HL2! I'm

insulation by T2 transformer , so i am not really surprise the RF3 load is providsing minimum disturbances to the RX path. Maybe an investigation on T2 transformer may provide some answer

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:

U7, T2 and other >>>>> components to see if RX gain comes back....answer is NO. >>>>> >>>>> U7 appears ok from what I can see (my eyes

because of T2. If D1 is really shorted, you can remove it and retest the receiver. The receiver should work without D1. D1 is there to protect against very strong signals. 73, Steve kf7o

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

*Thanks for the help. This is very important information for me.* *Question 2:* I would like to study the PHY chip and use it instead of the KSZ9021.

Sure Probir, I have a .STL design for a 3D printed case too (see my twitter) On holiday at the moment so will share later on the wiki or separate git

the original T2. My modification is based on his information and Steve's kindness support. I thank them. 73, JA9MAT Hidehiko. On Thursday, September 30, 2021 at 3:51:45 AM UTC

the replaced T2. 73, Steve kf7o On Tuesday, September 14, 2021 at 3:53:59 PM UTC-7 qrp...@gmail.com wrote: > The result of comparison is as follows; > > 1) SNR: 1 or 2 dB up at

Hello Martien, I'm not sure if you're also using the PiHPSDR controller board or connecting the switches directly to the GPIO pins of the RPi.

“ FET my very well show such „short cuts“. You could de-solder connection „2“ of the output transformer T2 (possibly not too difficult) to this end. Just my $0.02, Christoph DL1YCF.

T1/T2 > configuration in order to understand what the problem is IÂ guess... > > Regards, Jonas > > > Den tors 29 okt. 2020 kl 15:53 skrev Sid Boyce >: > > Hi

Hi all Finally I have two of the Controllers working and the last extra PiHPSDR Rev 2 PCB is available. This is the newest Rev 2 gerber files from the

In message , Marc OLANIE writes >Btw, could you pse tell me the shielded Coilcraft reference you used >for the 2 m band ? I'm really

Dear All, I am happy with HL2's recent purchase and enjoying the Receiver. But for higher output if I wish to connect a LINEAR AMPLIFIER its not

voltage beyond T2 as a result of impedance transforming to a higher one. But in practice, we don't need it. Because the MAX value is a parameter of little use because much earlier

filter and T2 transformer >>> >>> RX input in HL2 FPGA has a very good dynamic range and only the T2 >>> transformer is the IP3 parameters bottleneck (and

hand wind T2 on a larger core and you may need to do that again for best low frequency performance. The footprint for T2 actually has through holes to allow for easy mounting of this option

Hi Mathis/group, I have quickly drawn this in kicad. It didn't even need an extra relay. Please find attached to this email. This discussion also

Tune - T2 if tune OK or T3 if tune not achieved >> >> The UART probably won't talk directly to most tuners but there can be >> some fun group activity developing

Here is the BOM. I am still working on getting the voltages more stable. I see that HL2 has 2 caps on the AIN1/2 lines that are marked DNI. Will

used for T2 on the HL; the graph below show the transformer response for > - BN43-2402 with 14 turns : 5 turns > - BN73-2402 with 14 turns : 5 turns > > - MACOM MABA-010143-FLUX18

Marc: I got another gainful insight email from Ruediger and wanted to send it along so you could post the pdf to the Github repo as well: Hi Kyle, to

Hi Group, I have forked N2ADR's filter board and created a revision E5. Changes are listed below. Most of these changes are experiments in reducing