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I should also mention, I did all measurements with the RF-IV sensor. It seems to work so well, I didn't use a directional coupler. Thanks, Shabaz. ________________________________ Sent: 01 September

Hi Marc, Thanks for the information, it's great to hear about the procedures used. I've not used the touchstone format yet, that's something I'm looking forward to. I didn't realize VNWA had a

Hi Shabaz I'm a lazzy guy and definitely not a "tech pundit". But when I'm playing with xtal filters, I first run a transmission measure in both direction, store the datas in an S2P touchstone file

Hi Everyone, I hope you're well. Although I have some RF background, I don't do this for a day job, I'm very much a beginner so apologies if I'm asking something basic. I've never had to match such a

Greetings to all, In response, the Agilent Impedance Measurement Handbook illustrates where RF-IV is superior to the reflection method. Measuring capacitor ESR is especially challenging and a study

Hi Gary, Thank you for the reply jogging my memory! I vaguely remember long a thread and the construction of the RFIV head, I wish I would have paid more attention and built one. I will contact Ivan

Some years back I was having trouble measuring Q. The values from my HP 4342 and N2PK were no where near the same. Contacted Paul and he suggested getting a rfiv bridge. Things changed dramatically.

Greetings Q can be derived for either L or C by measuring their complex impedance .? In either case Q is a ratio of the real to imaginary values provided by the VNA.? I have recently spent

Dave, It might seem like heresy but I would recommend that you download the software that runs the DG8SAQ VNWA. /g/VNWA/files/A1%20DG8SAQ//VNWA36.7.9.8.zip It will also control the

Hello All, I haven't posted in years but I need your help now. The hardware is a single detector board with Pauls original coupler board unmodified. The software I'm using is MyVNA version 1.0.0.54 on

Hello folks, After many years of great service my N2PK VNA has developed a problem, it acts like it's detectors both have poor sensitivity. Can anyone give me some guidance troubleshooting? Drop me a

Hi I am wondering whether anyone might have a single detector PCB available. I am looking to update a rather old single detector N2PK VNA to a dual detector for use by a friend. Thanks. Bob, 5B4AGN

Thanks Gary. Unfortunately it shows solid continuity when I test it. I have replaced the regulator as well - the replacement and the original behaving the same, unfortunately. 73/jeff/ac0c

Sounds like the gnd terminal of the regulator is floating. Mine behaved normally. Gary NA6O

I've finished a v5.2 board and the VNA seems to be operating properly.? However there was one odd observation that I was hoping someone in the group may have seen before, or have a theory about. The

Hi all I have a problem. I calibrate in reflection mode, then I apply again the load used to calibrate and display the Xp. See enclosed the result, glitches ? Help IZ2ZNC Gianfranco

Paul, Thanks for the excellent piece of test equipment. Your groundbreaking work as spawned many designs but your VNA still has tput if piece of quality test equip,emy in the hands of experimenters.

Hi Paul, Any estimate of how many N2PK VNA's were constructed over the years? Steve, K8JQ

Hi All, Ivan has kindly added an archived copy of my now defunct website to his website here: <https://www.makarov.ca/n2pk_archive/index.html> I have also updated my QRZ page to reflect this. Stay

Hi I am using the myVNA 1.0.0.95 When I import a any configuration ( transmission, S-Parameters etc ) appears tick also " TDR mode only". I have to un tick it and everything works properly. Any