Batboard

SlimBob

Because with 110W, who cares if the repeater is down? Just drive for somewhere "high enough" and you'll be heard for miles around.

SlimBob

http://www.cryptomuseum.com/crypto/motorola/saber/

SlimBob

So the TX route would be through the Syntor X9000 on the car-to-car channel.

I wonder what the Spectra was used for.

SlimBob

That's PA as in Pennsylvania. Does anyone know anything about these units? It appears to be a 10.7 MHz IF radio with a squelch hybrid and a tone detector, with a Mitrek preselector and channel element. How was it used? What was part of the installation or set? It just appears to be a stand-alone rec...

SlimBob

Did I say "sweet" yet? Sweet.

SlimBob

Impressive given the noise high-power motor controllers can give off.

SlimBob

Short answer on the output issue: 100 uF capacitors on both audio leads in series with the audio path.

From the Saber +5V bus to the Option sel connector, there is a 20 kohm resistor in between.

SlimBob

So I did it and it works. Four 10F 2.7V capacitors from eBay later, I have them installed in a off-brand battery along with some foam so the battery contacts don't fall inside. I destroyed the thermistor by accident, so I replaced it with a 10K resistor. Other batteries I had handy were showing 9.96...

SlimBob

Preamps lead to front-end overload, front-end overload leads to AGC limiting, mixing products, etc. For a repeater site on a hill without much of anything in the neighborhood, that's not a bad idea. But if there's anything within five miles, the preamp will need cavity filters itself, not to mention...

SlimBob

... and that system is engineered?

SlimBob

With the adapter installed, the Saber still uses internal audio unless a headset is attached, and then it uses external audio. Of course, when keyloading it emits the 1KHz tone from the internal speaker on "PASS". Motorola radios typically use electret microphones; I don't know at what sta...

SlimBob

Does it support a multiple radio environment with a single HHCH?

SlimBob

I recommend putting a spring on the antenna if you're too lazy to get out and take it off before driving through the parking garage.

SlimBob

I was trolling, obviously, and I apologize for that. (Seriously though, a few updates to the main site wouldn't hurt.) Speaking of radios, so what all radios are FPP capable, relatively easily or out of the box? So far I'm seeing JT1000 (with diode) and late-model APXs. Any others? (From any manufac...

SlimBob

Yes. The DVP is probably older, less power-efficient silicon or germanium.

There is no bleeder resistor in there to remove.

SlimBob

So the final answer is ERP and antenna pattern. That's why you buy a 110W radio. Coverage, plain and simple.

SlimBob

What I am saying is that the power draw by the secure module is normal.

SlimBob

Yup, it's posted right under Model Specific Information and APX.

SlimBob

No Seriously? You're going to argue that 50W into an antenna with 3dBd of gain isn't equivalent to 100W into a 0dBd antenna? OTOH, when on lowband: Repeaters? What's a repeater? A critical piece of life safety telecommunications equipment well utilized by the largest and possibly the most professio...

SlimBob

com501 wrote:You mean a quarter kilowatt in my Expedition on 52.525 isn't normal?

If I may be nosy sir, what are you running that gives you 250W on lowband?

I've heard stories of a 250W mobile radio, but I have not been able to validate them.

SlimBob

The point of buying a 110W radio... 1) Motorola got into a power war with somebody years ago and 2) someone became convinced that 110W was the only way to go. 3) 110W with a dipole/quarter-wave ("Kulrod", 0dBd) antenna is a 110W ERP 4) Equal in ERP to 50W with a +3dBd antenna gain (as prov...

SlimBob

Bad PA modules were a common drain in that line. The other thing is that any secure-capable radio equipped with a crypto module will draw power to keep the key alive, even if no key is loaded. This is because the zeroize function requires it; if there is no power, the key is lost, which eliminates t...

SlimBob

If they'd only make an 800-channel dual-band radio... oh wait, that's the Orion....

SlimBob

What is your horn-ring setup?

SlimBob

http://www.repeater-builder.com/motorol ... -info.html

SlimBob

Is the VMN 1035 just a regular mic, or is it weather-proof? Is there any source or identification for the connectors on the microphone or the radio?

SlimBob

Capacitive discharge systems can work with as few as 2F at 30V - 40V. The deeper you want to go, the more amps you need.

SlimBob

Now to fit it with a "beacon" mode so that you don't have to read the error locally, but can transmit an unmodulated carrier...

SlimBob

I know this is a very strange thing to ask, but I need Hirose experts help. I want to now if it is possible to connect a Motorola handheld via Hirose, or a scanner via tape/headphone out, to an Azden 1201BT wireless transmitter. The wireless "body-pack" transmitter has a 4 pin Hirose mic ...

SlimBob

http://www.repeater-builder.com/antenna/ant-sys-index.html#mobile http://www.repeater-builder.com/antenna/pdf/diplex-low-band-antenna.pdf Remember that cable length in inches is related to velocity factor if you have to fashion your cables out of something other than RG-58. Come to think of it, if y...

SlimBob

The magic for a 120 degree sector is a 15 or 30 degree negative anhedral angle on the reflector, if you're looking down the top of the antenna. But to pull that off with gain, you'd need something like three DB-224s backed with those troughs, mounted around the tower, and fed with equal-length phase...

SlimBob

Slow computer issue?

SlimBob

This really is an old thread, but I hope someone listens. I would love to make my own headset for my saber R's - I have the KVL adapters and hirose plugs, but I am having a hard time making something that works from the information in this thread. If anyone can provide a schematic on how to make it...

SlimBob

To revive an old thread: Does anyone know how much current is available on the "batt+" line out of the hirose? I'm thinking of maybe trying to power a low-power audio amp IC from it. Probably enough to do that, but not much more. Since it's coming from +5V, you can bet the CPU(s) are powe...

SlimBob

This needs to be archived when Batdude decides to update the website.

SlimBob

Emissions is beside the point anyway.

SlimBob

It's 15,000 * x number of records. That could be easily handled in a flat file, i.e.: CSV.

SlimBob

Does anyone have a part number for the plastic collar that goes on the switch/pot shaft and adapts to the rubber knob? I broke a pair.

SlimBob

http://www.onfreq.com/syntorx/syntorx9k/progx9.html

All you ever wanted to know about programming a Syntor X9000.

SlimBob

Sweet Jebus. 5AH on a Saber... imagine the possibilities....

SlimBob

I can see the ITAR angle, because someone shows up at the auction and buys the radio, perhaps not a citizen, and may not care where they ship it to as long as they get money for it.

I haven't seen many carriers on eBay either; the few I've recently seen have been listed from Norway.

SlimBob

Seems like most Securenet radios that hit eBay have been stripped of the Securenet modules and/or carriers in the case of Spectra and other radios. Do these people realize that the key is invalidated when the carrier is removed from the radio, or the hybrid removed from the carrier? Or is this some ...

SlimBob

Located an MCX100 with Securenet: VLN4128A: Left extender rail VLN4335A: Right extender with keyloader connector hole TRN4606B: Control head, Securenet (simple?) TRN5666A: TOT, 60 second Option B11AK VKN4021A: Cable Harness, TOT VLN2126B: Hybrid carrier board (77M38 present), TRN4836A loaded (DES fr...

SlimBob

Yes, they have gotten "affordable".

SlimBob

You need to make sure the MOFLAGs are appropriate for the radio, and that the Model # / ID # are set to what they need to be. Once you install the "whored-out" example code given on the MOFLAGs page, you'll be able to set the radio to A4/A5/A7/A9 at will. But until it's been set for that, ...

SlimBob

That or switch bands.

SlimBob

Manual is on Repeater Builder.

SlimBob

The NMO27C and the NMO50 are designed to cover single bands and will not work on others (unlike a simple 5/8th-wave 2m antenna, which is almost like a 1/4-wave at 50MHz). More antenna bandwidth means less Q; high-Q antennas are small and tune over narrow ranges. Larger diameter wire makes for lower ...

SlimBob

1.8W sounds high.

SlimBob

You're going to have to have an antenna wire run in the armored vehicle to get outside for the repeater. Or put the repeater in a non-armored vehicle.

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