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Alex: Thank you for these pictures. This is very helpful information. I have a Johanson catalog and tried to match the capacitors at least in physical size.? It did occur to me the capacitor values

Anyone have experience using a TDR to locate an underground fault for high voltage ? There's a PUD in central Washing that can't appear to fix an outage for the past three weeks or so. It's affecting

I think you guys figured it out. It is 0.43 outside diameter and looking up RG-225/U yields the same cable that I have. The cable I have has absolutely no markings on it. The only reason I know it was

I bought a Motorola R2600C for $600 and then about a week later picked up a Motorola R2550 with tracking generator for $400. I already have a Rigol DSA815TG spectrum analyzer that I use for filter

Could you upload some photos of it?

Ken, You are likely right but if I had the part number off the board I could confirm. There were some 100 watt mid band boards as well. The coils look different from the UHF ones I have here. Ken

Quintron QT-6700 (UHF) was 90 watts.I have a spare here and his board looks nothing like the one I

Need the part number on the other side. Post a pic of the other side. Looks like a Possible mid band board. Ken Pearce N4KCD Commerce Township, MI

Just looking at it, especially the LP filter, I'd say UHF...lots of strip line used Chris WB5ITT [email protected]> wrote:

I have this PA and it is labeled “100W PA”. However I cannot find the datasheet for the transistors. Motorola SRF2604. any ideas what the range for this is? drive needed?

Looked it up in a Nemal Electronics Catalog, and you remembered correctly, Jeff. Both cables are identical except for the jacket on RG393 is -70 to +200 degree C fluorinated ethylene propylene (FEP)

Hi Greg, Several things from the school of hard knocks... Recheck the length of your VB-35 matching section with at least several feet of 50 ohm coax between it and your measuring instrument as I

Such as? The RSS is pretty easy to navigate Chris WB5ITT [email protected]> wrote:

I second this. I had the same question about a month ago and ended up getting an HP8921A. It’s a good analyzer to learn on and does probably way more than you need.

For non digital stuff the HP/Agilent 8920 series.

The NanoVNA-V2 seems to handle doing the pass part pretty well. You're measuring return loss there, and it seems to handle that just fine. Only question I might se is if the frequency standard is

? It is an older variant of RG-393. I know it's 393 and I know it's 50 ohms. Apparently, I didn’t receive the original post, only your follow-up response. Questions: 1. What is the measured

Roger, In hopes of answering your original question, I got my hands on a DB212-2 originally on 37.7MHz and shortened the antennas and matching section for 6 meters. The 35 ohm matching section

I don't think you understood my question...I am asking about this specific cable. It is an older variant of RG-393. I know it's 393 and I know it's 50 ohms. I'm aware of every RF connector. I'm

Hello all, would anyone have any tuning information on the Varden duplexer 146-148mhz. I know its a long shot, but no searches on the web produced any results. These were made by Varden