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Date
Re: Low Band Motorola Base
If it's on 45mhz then it can go to 6 meters.? Crystals are available from Quartzlab. Are there any modules hiding behind the test set?? (the speaker assembly) I supect the cards include a squelch
By M M · #183705 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
What exactly are you trying to accomplish? If the notch filter effectively gets rid of the noise generated from the rouge transmitter, what more do you need? I presume the BpBr can Bob spoke of would
By Dean/K2WW · #183704 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
What is the standard method to measure phase noise? Most measurement systems have pretty wide skirts that seem to be phase noise generated by themself, not actual phase noise from the transmitter.
By Skyler Fennell · #183703 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Thanks for the graph Bob. Kenwood looks nice ? ________________________________ Sent: Sunday, January 17, 2021 11:31 PM To: [email protected] <[email protected]> Subject: Re:
By peter oesterle <phoesterle@...> · #183702 ·
Re: Motorola XPR8300 repeater, no USB comms
Hi Matt, Also make sure the network cable is unplugged. ~Ross
By Ross J · #183701 ·
Re: Low Band Motorola Base
Yes, the "intermittent duty" heat sink was a lot like the MOCOM. But not quite.
By Steve · #183700 ·
Re: Low Band Motorola Base
Located in Florida panhandle, in Niceville. Model number is C71RTB-3146D It is Micor based, although, as has been pointed out, it has a Mocom 70 PA. As for modules, whatever is in the picture. It¡¯s
By willpower1234 <radio5000@...> · #183699 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
What would've worked better in that situation is a pass-notch cavity from a duplexer. I've been lucky enough to find a couple standalone BpBr cans at Dayton & local swap meets. While designed for 3 or
By Bob Dengler · #183698 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Not unless you're talking about the PLL G.E. exciter. In the offset frequency range of 12 kHz to 3 MHz a Kenwood TK-880 mobile has lower phase noise, as much as 20 dB lower at some offsets. Bob NO6B
By Bob Dengler · #183697 ·
Re: Low Band Motorola Base
That almost looks like a MOCOM 70 heat sink hanging out of the rack panel there.
By tony dinkel <td47@...> · #183696 ·
Re: Motorola XPR8300 repeater, no USB comms
thank you Matt!, I have some old CPS still in my folders, will try, and report back.? 73's,? Mark
By Mark · #183695 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
There are reasons why a repeater like a Quantar cost >$10,000.00. A clean transmitter is one.? I have run a Quantar on 2 meters at 600 kHz split? with no desense on an 80 dB 4 can duplexer.
By nj902 · #183694 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
The old GE mastr ll repeaters were nothing but the same circuits for the most part but the amplifier was available in 2 types.? Intermittent and 100 % duty so to speak.? The only difference was the
By Ralph Mowery · #183693 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
...and that makes it a "factory" repeater? No different then adding a fan to a commercial mobile radio, which BTW is what I've been doing for the past 30+ years ;) Bob NO6B
By Bob Dengler · #183692 ·
Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
Eric, I've gone both routes with my 900 repeaters - first, I built one out of 2 mobiles tied to a controller and, then I built one from a purpose-built - a Motorola MSF5000.? (FWIW, I sold the
By n9wys · #183691 ·
Re: Low Band Motorola Base
What part of Low Band are you looking for? -- Glenn (Butch) Kanvick KE7FEL/R 1-406-655-1232
By Glenn (Butch) Kanvick · #183690 ·
Glenayre 9T97A125 UHF Amplifier schematic
I have a little bit of logic troubleshooting to do on one of these amps. I have a operating manual, which has two pages of the desired schematic. However, page 7-17 is a schematic, page 2 of 2. The
By K8TB · #183689 ·
Re: Looking for a Motorola Quantar
If there are no Quantar equipment limitations for operating a Range 2 Quantar on 146.730/146.130 MHz then I'm open for that. But, I was generally referring to the Range 1 Quantars with 125w PA. I
By Andrew Grimm (K8ATG) · #183688 ·
Re: Clamp meter mistake -- watch for a balanced meter movement if analog
Hello Karl ! Explanation -- It¡¯s balanced ¨C not balance. For example, my trusty old Simpson 260 is an almost balanced meter movement. Even with it, when holding it in different planes (lying down,
By Mike Langner <mlangner@...> · #183687 ·
Re: Low Band Motorola Base
Model / modules? Location? Those are important facts. If I saw this at a swapfest, I'd load it off your trailer and into my truck for free ..... 73 Jim N6OTQ
By Jim Strohm · #183686 ·