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/g/repeater-builder/message/213096?p=%2C%2C%2C20%2C0%2C0%2C0%3A%3ACreated%2C%2Cquantar+microphone%2C20%2C2%2C0%2C111263439

Good evening, as I go through and upgrade my repeater system, I have a NOMIC sound card interface from West Mountain radio and the cable going from the RC 210 computer controller to that interface

Only if the charger/battery combination are higher voltage than the power supply output, assuming equal voltage drop across the diode block. As long as the power supply voltage is higher, the battery

Mike, that hand mic was also used with the HT-90 and HT-440 Converta-Coms and although I don't have those service manuals anymore I do recall seeing the mic schematic in one of them as well as in

I received an email this morning from a Civil Air Patrol group. They have a Quantar and discovered that the test microphone jack on the front? of a Quantar is a 6 pin! RJ11?/?RJ-12?/?RJ-14 style

It should also be noted that a lot of "smart" chargers are not nearly as smart as they claim... and in particular, are just voltage setpoints and timers... where the current limit is just the same

I've gotten several direct messages about this, so let me go into some more detail about what happens when you use a "smart" AGM charger, an AGM battery, and a DC-powered repeater system powered off

Brandmeister sends a beacon to all repeaters every minute. Here is a part of the log from the Canadian BM Master with the beacon being sent. 2025-04-24T00:00:32.613587-04:00 server01 Master

My Motorola SLR5700 repeater goes into transmit every minute and does a 5 second data burst. Here are the settings I have in my repeater, I never recall having this problem in the past. Are my

Great PowerPoint presentation John! I put my multiple complaints in and reported it to those keeping score. When I searched the FCC database, I noticed that Chaos was also granted tests on several

It will have the opposite effect.? To get more dynamic range you would really need an amplifier or a way to drive in more signal.? The pads are just to match the impedance as the output/input

The battery-specific charger still sees the load (albeit via a voltage drop from the diode). Unless you do the "isolate battery via relay except when power is out" approach that others have suggested,

Matt Call me when you can about this. Kory W4RZ

Interesting consideration... We could implement as two isolated power sources... "diode OR" ?? Basically... Supply ---> diode ---> Load Charger ---> Battery ---> LVD ---> diode ---> Load The

The Columbus (GA) Amateur Radio Club has a few fully functioning repeater items for sale.? Please check them out!? You can reply directly to me at *kk4cps@...* Motorola MSF5000 VHF 75w

We, and the chargers I am aware of, don't force the battery current draw at any given state of the battery or phase of the BMS.? ie, not constant current. - BattleBorn and Renogy both indicated the

At 4/24/2025 08:14 AM, you wrote: Pads can be helpful on the generate side of a VNA providing a good resistive match to the device under test. Many years ago working at Hughes Aircraft we

Will a pad give the nanovna more of a dynamic range to see the notch depth? Iirc the dynamic range of a standard nvna is about 60 to 80db. So if I put a 10 or 15db pad that should help with tuning

I have not used the Astron supply in many years. Switched to a GE mastr ll repeater with power supply.? We had problems with the Astron going in to crowbar protection when the power would flicker

Pads can be helpful on the generate side of a VNA providing a good resistive match to the device under test. Many years ago working at Hughes Aircraft we always terminated our generate cables with a