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VHF Cavities and other 220 combining available.... plus MORE
This is a "For What its Worth" post, but maybe it will have some interest. I hope posting this here does not violate any group rules, but it seems like the appropriate audience. I am clearing out
By bbfmrf · #214432 ·
Re: TDR for power line
I've used TDR to find fault on small JKT(telephone wire) to underground tech cable (10-3) The velocity can be anywhere between 50 to 90 % Make sure there is no remaining power connected to any of the
By Pierre Martel · #214431 ·
Re: Suggestions for service monitor
Steve, I have RSP Spectrum Analyzer made for the RSP line of inexpensive SDR receivers and while it works well and is cute, its just a toy. Alignment of repeaters which I take as tuning the receiver
By Mike · #214430 ·
Re: TDR for power line
Not for high voltage, but for fire alarm cabling on utility poles. I had a Riser Bond TDR that I used for fault location.? A long time ago I was asked to find a fault in a municipal cable that was
By Joe · #214429 ·
Re: Possibly Quintron PA? Need help identifying transistors
Quintron made a lot of equipment for the 72-75Mhz linking band for paging. Joe, K1ike
By Joe · #214428 ·
Re: MTR2000 channel steering
Mornin' John, In the MTR2000, the GPIO pins on J5, the 96-pin System Connector only connect to J1 and J2, the Option slots in the cardcage.? The System Controller is at J3.? To use those pins
By Dave WA1JHK · #214427 ·
Re: 6 m repeater antenna
Attached is some information on the DB212 antennas. Perhaps this will help. This was factory info from a DB212-2 that was tuned to 47.14 MHz. 73 Joe WB4HIS Sent: Tuesday, April 8, 2025
By Joe Poerschke · #214426 ·
Re: 6 m repeater antenna
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By Roger willey · #214425 ·
Re: 6 m repeater antenna
On Apr 7, 2025, at 5:55?PM, wgwl via groups.io <wgwl@...> wrote: ? Roger, In hopes of answering your original question, I got my hands on a DB212-2 originally on 37.7MHz and
By Roger willey · #214424 ·
Re: 6 m repeater antenna
On Apr 7, 2025, at 5:55?PM, wgwl via groups.io <wgwl@...> wrote: ? Roger, In hopes of answering your original question, I got my hands on a DB212-2 originally on 37.7MHz and
By Roger willey · #214423 ·
Re: Possibly Quintron PA? Need help identifying transistors
It definitely looks like a Quintron constructed board.? The white label with the writing on it looks like how they identified boards. The date code may be 1989?? I think that was before they were
By Joe · #214422 ·
Re: Possibly Quintron PA? Need help identifying transistors
Anything with an SRF part number is usually a special-production or binned version of a regular MRF part, but rarely were cross-references (if they existed) published. That said, given the amount of
By Jeff DePolo WN3A · #214421 ·
Re: MTR2000 channel steering
Chris, I'm trying to program channel steering in the RSS using GPIO pins on the 96-pin connector without any optional cards. That section of the RSS isn't very straightforward to me. 73 -de "Curly"
By john ni0k · #214420 ·
Re: Suggestions for service monitor
The Motorola 2600 series is hard to beat... And can be found reasonably priced if you are patient. [email protected]> wrote:
By Kevin Berlen · #214419 ·
Re: Suggestions for service monitor
Mike, This is a Windows program, but I think it's a lot of what you want and you can choose the hardware SATSAGEN ( https://www.albfer.com/en/2020/02/21/satsagen-2/ ) Steve N4IRS
By Steve N4IRS · #214418 ·
Re: Possibly Quintron PA? Need help identifying transistors
Good idea! Thanks! WZ5TX David “Tyler” Bufkin ________________________________ Sent: Tuesday, April 8, 2025 5:54:35 AM To: [email protected] <[email protected]> Subject: Re:
By Tyler- WZ5TX · #214417 ·
Re: Possibly Quintron PA? Need help identifying transistors
Well here's an idea, put 12 volts to it, put a service monitor or signal generator into it, broadband watt meter on the output and sweep it and see where you get a peak in RF out driving it with say
By Chris Boone WB5ITT · #214416 ·
Re: Possibly Quintron PA? Need help identifying transistors
Here is a pic of the only numbers I see on the board.
By Tyler- WZ5TX · #214415 ·
kyodo kg510
does anyone have a programming lead for a kyodo kg510 or schematic of one
By Ian Wells · #214414 ·
Re: Suggestions for service monitor
Third. Bob NO6B
By Bob Dengler · #214413 ·