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Search found 871 matches

by kc7gr
Tue Jan 15, 2008 12:08 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Im looking for a relay
Replies: 7
Views: 1265

Re: Im looking for a relay

Siemens, and other companies, make relays that can be configured for nearly any type of time-delay or slow-pulse operation. I'm using one at home that, with a flip of a few thumbwheel switches, can be set to do a slow-pulse thing for as long as the trigger signal is present. You could probably use t...
by kc7gr
Tue Jan 08, 2008 2:49 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: (/\/\)otorola VHF-Air Base Station
Replies: 5
Views: 590

Re: (/\/\)otorola VHF-Air Base Station

The Government Electronics Group of Motorola made at least one that I know of. It was indeed a big rackmount unit, I think about 8U or so, that was built to military specs and covered the military aircraft band (225-399.9MHz). I used to have one. Fascinating box... Don't remember what I did with it ...
by kc7gr
Mon Jan 07, 2008 4:15 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra a5 to a9
Replies: 2
Views: 420

Re: Spectra a5 to a9

Relatively easy, as conversions go. You will need to bit-bang the memory contents to change the control head type byte, and while you're at it you should also (for appearance' sake) change the model number to end in A9 instead of A5. Once that's done, you should be able to add the A9 head and progra...
by kc7gr
Mon Dec 31, 2007 4:09 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra Worth Fixing
Replies: 9
Views: 630

Re: Spectra Worth Fixing

Actually, the problem may not be as bad as it sounds. One failure I've seen with Spectras, particularly the high-power radios, is that one or more of the PIN diodes in the PA section will short out. This can cause greatly-reduced receiver sensitivity or... drumroll... reduced TX power. There's a sim...
by kc7gr
Sat Dec 01, 2007 4:24 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: Spectra W9 VHF Codeplug needed
Replies: 2
Views: 251

Spectra W9 VHF Codeplug needed

Fellow Astro fans, I've just acquired my first Astro Spectra. The only thing that's wrong with it for my use is that it's a W4 model. I already have the hardware to do the conversion to a W9 head, but I need a codeplug for such. I've already checked the Supersite -- no luck. Model: T04KLF9PW4AN Memo...
by kc7gr
Mon Sep 24, 2007 12:22 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra cap change
Replies: 3
Views: 483

Re: Spectra cap change

Howdy, Im new to bat boards, I have a UHF A9 spectra that needs the caps replaced. I was told by someone on another board to look up WIll over here in bat boards. Thanks. Will can certainly do it, and so can I if he's too backed up. No matter which one of us you choose, make the choice quickly. Tim...
by kc7gr
Mon Sep 24, 2007 12:20 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Hamfests. "Standard hamfest bandplans" for members?
Replies: 15
Views: 873

Re: Hamfests. "Standard hamfest bandplans" for members?

Personally, I've found VHF MURS channels to be all I ever needed. No license needed, you can use crypto (DES, DES-XL, whatever), and more than adequate range.

Happy travels.
by kc7gr
Mon Sep 17, 2007 11:43 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra MLM upgrade procedure
Replies: 16
Views: 1555

Re: Spectra MLM upgrade procedure

What you describe is simple in description, but it requires considerable skill (in surface-mount device rework), the correct tools (SMD hot-air or infrared rework station, and a device programmer), and a lot of patience. The biggest problem is the initial EEPROM program load. You see, fresh memory m...
by kc7gr
Wed Aug 29, 2007 10:48 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Improving Spectra TX audio
Replies: 3
Views: 288

Re: Improving Spectra TX audio - UPDATE

I remembered I had quite a few Spectras here at work, so I decided to do a bit of experimenting. R413, right next to U400 on the command board, is one of three components that make up the pre-emphasis circuit. You also have C419 as the capacitive component, and they both work in conjunction with an ...
by kc7gr
Wed Aug 29, 2007 8:20 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Improving Spectra TX audio
Replies: 3
Views: 288

Re: Improving Spectra TX audio

Hi, Will, It wasn't me that measured it, actually. I had an odd report on my audio quality, via a UHF T44 series radio, while I was speaking over a linked repeater system in Oregon. The fellow making measurements at the receiving end was comparing my audio response with that of another station, and ...
by kc7gr
Tue Aug 28, 2007 8:45 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Improving Spectra TX audio
Replies: 3
Views: 288

Improving Spectra TX audio

Fellow techies,

I would be curious to know if anyone has investigated improving the low-frequency response of the Spectra's transmit audio. I'm running into an issue where, according to some measurements, audio frequencies below about 1kHz are getting pretty sharply attenuated.

Advice?

Thanks much.
by kc7gr
Mon Aug 27, 2007 10:06 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra Consolette and bad caps...
Replies: 11
Views: 564

Re: Spectra Consolette and bad caps...

For the sake of durability, I greatly prefer the Panasonic HD series caps over anything that Nichicon turns out. The HD's are rated for 5,000 hour life at 105 degrees C (hotter than boiling water, for those who don't speak Celsius). If your radio is running in that kind of heat, you've got other pro...
by kc7gr
Sat Aug 25, 2007 4:56 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Needed: Spectra A3 VHF Codeplug
Replies: 0
Views: 225

Needed: Spectra A3 VHF Codeplug

Fellow Techies,

I have need of a codeplug file for a VHF 110W (T83 series) A3 Spectra. I've already checked the Supersite without any luck.

Thanks much.
by kc7gr
Sun Aug 05, 2007 8:09 pm
Forum: Radio Programming
Topic: Correct prgramming
Replies: 5
Views: 506

Re: Correct prgramming

Try running the software under true MS-DOS 6.20 or later.

Trying to work with a radio with it running under any sort of simulated DOS window is simply begging for Murphy to mess with you.

Happy tweaking.
by kc7gr
Sun Jul 22, 2007 8:35 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Two spectras/one siren box
Replies: 2
Views: 295

Re: Two spectras/one siren box

I've explored this issue a couple of times. The only way I can see to reasonably do it is to have two siren boxes, one per radio, and to have a relay switch the speaker from one box to the other. I've not figured out a good way to trigger the relay, as I've not found a way to make a VIP output chang...
by kc7gr
Tue Jul 17, 2007 8:12 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra Squelch issues -- can any one help?
Replies: 5
Views: 310

Re: Spectra Squelch issues -- can any one help?

One thing I've found that can have a drastic effect on receiver sensitivity in the Spectras: The PIN diodes in the PA section, used for switching the antenna from receive to transmit and vice versa. I had a radio come in a while back with similar symptoms to yours. Replacing one of the PIN diodes (w...
by kc7gr
Sun Jul 15, 2007 2:28 pm
Forum: Computer/Technical Assistance
Topic: Google [Bot], MSN [Bot] Etc. What's It Mean?
Replies: 5
Views: 1669

Re: Google [Bot], MSN [Bot] Etc. What's It Mean?

Fair warning: Google search bots are not always benign. Before I all but accused Google of a DoS attack, one of their bots was hammering (and I do mean HAMMERING) my FTP site with a ton of anonymous login/logout attempts daily. There was no crawling of directories, no indexing whatsoever -- Just the...
by kc7gr
Wed Jul 11, 2007 10:25 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: vhf maratrac question
Replies: 5
Views: 513

Re: vhf maratrac question

Alternatively, if you have the Software That Should Remain Nameless, you can blank and reinitialize the logic board to be 136-162, reprogram, and perform an alignment. That'll get your power levels under control with no hardware mods.

Happy tweaking.
by kc7gr
Sun Jul 08, 2007 8:14 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: [== Syntor X 9000 Help Needed - Radio Won't Transmit ==]
Replies: 6
Views: 419

Re: [== Syntor X 9000 Help Needed - Radio Won't Transmit ==]

Have you checked to see that the orange lead at the control head end of the cable is connected to +12V?
by kc7gr
Sat Jul 07, 2007 8:58 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: RAM Upgrade for R-1800's
Replies: 2
Views: 225

RAM Upgrade for R-1800's

Fellow techies, It's probably common knowledge, for those familiar with the units, that the R-1800 suitcase programmers only came with 1K RAM by default. Said RAM is made up of pairs (one pair per 1K) of type 2114 SRAM chips, 450nS speed, a type that has been considered "obsolete" for many...
by kc7gr
Fri Jul 06, 2007 11:31 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: MX/PX 300 prom burning
Replies: 7
Views: 543

Re: MX/PX 300 prom burning

Funny that this topic should come up just now. I just acquired an R-1800 for Blue Feather, along with several adapters including those for the MX-S portables. In short: I now have programming capability for such, even if I don't have any PROM chips (yet -- Still looking for those). Another of my pla...
by kc7gr
Mon Jun 18, 2007 9:28 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: MX300 series spanner tool
Replies: 2
Views: 311

MX300 series spanner tool

Fellow tweakers, Back in the days of the MX300 series, there existed a specific type of spanner-bit tool that was usable on both the preselector nuts and the ferrule that held the RF jack (just above the universal connector) in place. This tool consisted of a reversible spanner bit that fit into a b...
by kc7gr
Fri Jun 15, 2007 10:17 am
Forum: Radio Programming
Topic: TWO Spectra's with FL 01/82
Replies: 5
Views: 654

Re: TWO Spectra's with FL 01/82

I'll third the words about RIB and cable. You also need to be aware of what you're using for a programming computer. Spectra software is not as picky as some, about speed and internal cache, but it can get finicky if you overdo it. For actual reading/programming, I'd be nervous about anything faster...
by kc7gr
Mon Jun 11, 2007 7:49 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Systems Saber UHF: Error Tone on TX
Replies: 3
Views: 261

Re: Systems Saber UHF: Error Tone on TX

Good guesses, yes, but in this case the problem has turned out to be... a bad synthesizer/VCO module. It's going unlocked on transmit for reasons that remain unknown to me.

Thanks to all who replied.
by kc7gr
Sun Jun 10, 2007 8:29 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Systems Saber UHF: Error Tone on TX
Replies: 3
Views: 261

Systems Saber UHF: Error Tone on TX

Fellow batters, I have an odd one on the bench at the moment, and was hoping for some insights. It's a UHF Systems Saber, version CON-6, programmed with all conventional (hamateur) frequencies. Receive is fine, but upon trying to transmit all I get is a brief flash of the TX light followed by a cont...
by kc7gr
Thu Jun 07, 2007 9:31 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: MCX-100's to the amateur band
Replies: 12
Views: 664

Re: MCX-100's to the amateur band

Bill, sorry to hear you had contact trouble. Check your PM's, please.
by kc7gr
Wed May 16, 2007 8:32 am
Forum: Radio Programming
Topic: Spectra Rx problems
Replies: 2
Views: 463

Re: Spectra Rx problems

This is in addition to a post about this subject earlier, just different problems: <snippety> The local repeater frequencies come in a little bit better but nothing like they should and some other sites where I am within miles of towers, nothing. Remote head is fine. The channels that are local tha...
by kc7gr
Fri May 11, 2007 7:56 am
Forum: Radio Programming
Topic: Spectra A9 programming problem
Replies: 4
Views: 565

Loss of the 'number' function of keypad buttons, on X9000 heads, programmed for anything other than 'Blank' is, unfortunately, normal. There are a couple of options you can use to work with switching zones on a 9000 head. (1) Get a DEK. You can easily program Zone Up/Dn on any DEK key. (2) Change ou...
by kc7gr
Wed May 09, 2007 8:52 am
Forum: Radio Programming
Topic: Spectra Alignment procedure
Replies: 7
Views: 727

still looking for the actual numbers. There have to be pre determined values out there that I can measure and verify in order to do this command board alignment, what I cant believe is that no one seems to have them, please help :roll: Ahhh... no, that's not really accurate. There is no "pre-d...
by kc7gr
Wed May 09, 2007 8:44 am
Forum: Radio Programming
Topic: mcx1000 receiving problem
Replies: 2
Views: 401

Re: mcx1000 receiving problem

I can program the radio in the 2 meter ham band and it will transmit on 145.xxx but will not receive. Can the receiver be tuned to receive there? it receives above 146.000 perfectly. Retuning the receivers in either the MCX100 or 1000 is a bit tricky. When you do your programming, the RSS will pres...
by kc7gr
Mon May 07, 2007 9:46 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Systems 9000 VIP Connector Alert
Replies: 2
Views: 317

Systems 9000 VIP Connector Alert

Fellow techies, Bad news for those working with Spectra, Astro Spectra, and Syntor X9000 heads. The VIP connector body, Moto part #15-80221J01, had a warning message on it that it will no longer be available after depletion of the current stock. I found this out just minutes ago, when I ordered a co...
by kc7gr
Sat May 05, 2007 10:57 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: crimpers,what size and make
Replies: 3
Views: 399

Re: crimpers,what size and make

I have a wild card to do lights ect.It came with a db 25 plug and pins. need to know what size the pins are and the correct crimping tool size ect to use. It is a standard wild card which is new ready to be installed. Assuming these are the open-style contacts, an AMP Service Tool II will do quite ...
by kc7gr
Tue May 01, 2007 7:56 am
Forum: Radio Programming
Topic: Spectra tuning
Replies: 7
Views: 827

Bruce, I read your post to mean that the reference freq. was off 1.5khz, even one khz at the ref would be about 10 khz at the VHF channel. <snippety> Then I'm really having a hard time making myself clear. I was actually referring to the TX frequency being off that far. I've corrected my post to re...
by kc7gr
Sun Apr 29, 2007 9:10 am
Forum: Radio Programming
Topic: Spectra tuning
Replies: 7
Views: 827

Re: Check it...

A reference oscillator that's off by as little as 1.5kHz can have a drastic effect on receiver sensitivity. . That would put the Spectra on the next channel on VHF, and the third channel on UHF!!!!!!!!!!!!! I rest my case. :wink: In all honesty, I think I may have made a typo in my first post. Make...
by kc7gr
Sat Apr 28, 2007 7:57 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra A-3 HHCH question
Replies: 4
Views: 477

Re: Excellent Question...

Hmmm, no answer in 4 years? Yikes. :) Well, I'm trying to do the same thing with exactly the same model number. Did you ever get this figured out? I'm guessing since the Dir position doubles as the 0 (securenet) position, the answer is negative talk around in a secure-capable radio. Thanks for any ...
by kc7gr
Fri Apr 27, 2007 8:31 am
Forum: Radio Programming
Topic: Spectra tuning
Replies: 7
Views: 827

Check it...

A misaligned reference oscillator can have a drastic effect on receiver sensitivity. You need to check the transmit frequency, using (at bare minimum) a solid dummy load and a known-accurate frequency counter. Ideally, you should use a service monitor. Since the RefOsc influences both TX and RX, a f...
by kc7gr
Wed Apr 25, 2007 9:40 am
Forum: Radio Programming
Topic: Ribless Cables
Replies: 3
Views: 806

Re: Ribless Cables

Hello all, I have a ribless HT1250 and CDM series cable and they work fine. A friend of mine recently told me that he purchased a ribless spectra cable. Now I have not seen any of these around and was wondering if anyone has ever used/seen one and what their input is? I'd be looking for a ribless s...
by kc7gr
Wed Apr 25, 2007 9:36 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: mini uhf connector installation instructions
Replies: 6
Views: 1952

Also make sure...

Will is correct. While there is some commonality, each manufacturer will do their connector a bit differently. I will add to this that the single most common failure I've found, with any crimp-style connector, has been use of the wrong crimping tool, or the incorrect use of the right one. If you're ...
by kc7gr
Wed Apr 25, 2007 9:23 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: New Soft-Radio Platform with /\/\otorola
Replies: 23
Views: 1879

Believe it when I actually SEE it...

With respect ... Your original post, honestly, sounds a lot like the promises and spin that any marketer will throw up to gain business. It's only after the sucke... uhh, 'customers' buy into the spin, and start pouring money into the hole, that they discover what kind of mediocrity they've bought i...
by kc7gr
Sun Apr 22, 2007 9:54 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: dek switch box
Replies: 1
Views: 253

Re: dek switch box

looking for the schematic of a dek box wiring to use for offroad lights ect. not the 25DB but the guts of the wild card itself. Just a nitpick: DEK (Direct Entry Keypad) boxes are microprocessor-based, and interact only with the Motorola radios they're designed for (Spectra, X9000, etc.) What you m...
by kc7gr
Mon Apr 16, 2007 1:21 pm
Forum: Radio Programming
Topic: Need an X9000 programming master to help me.
Replies: 10
Views: 830

I got your mail and the corrected codeplugs, thanks very much. <snippety> Would anyone know what might be the purpose of a second antenna connector on a VHF X9000? It leads to a small circuit board which appears to be a Y connection. If there is any other important circuitry involved, it's hidden b...
by kc7gr
Sun Apr 08, 2007 11:25 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra consolette need info
Replies: 2
Views: 662

Re: Spectra consolette need info

HI wise men! I buyed a spectra consolette in very bad condition. I repaired the control head and and some plastic parts in the case. <BigSnip> OK... What you have there is a mid-power (about 50 watts) VHF radio. It will likely cover the entire 2m amateur band with no mods required. On your power: T...
by kc7gr
Sat Mar 17, 2007 5:56 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: spectra model t38fwa7ha4ak
Replies: 6
Views: 517

Re: spectra vhf

gentlemen thank you for help with this I am now looking for a person in my area to program my new radio I have one person in the area but he can not do it for 2 to 3 weeks. If you consider Kent, WA to be 'local,' I can do the programming for you, as well as check that radio for the deadly (to the r...
by kc7gr
Tue Mar 13, 2007 8:34 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Maxtrac With Intermittent Receive
Replies: 4
Views: 340

Thanks for the tips. I'll start probing later this week. FWIW, the receive issue appears on any transmitting radio (tried various models, some not even Motorola) and any PL/DPL code, all at 25khz. One other thing to check: Make sure the reference oscillator is on frequency (as evidenced by transmit...
by kc7gr
Mon Mar 12, 2007 5:56 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Amatuer Licensing
Replies: 12
Views: 1056

Re: Radios, licensing, etc.

Just curious, why do commercial radios have very little to do with ham radio? <snippety> I see three major differences. (1) User programmability. Amateur transceivers may be easily configured, by the end user, to operate on any frequency within their designed coverage. This capability is prohibited...
by kc7gr
Fri Mar 02, 2007 10:18 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Maxtrac Transmitting Poor
Replies: 14
Views: 851

Dude...this isn't slapping you down, but, you aren't qualified to be messing around with this radio. Back in the day, this is the reason you HAD TO HAVE at least a 2nd Class FCC ticket to work in radio as a technician. Just take the radio somewhere to get looked at. You'll save $$$'s rather than bu...
by kc7gr
Fri Mar 02, 2007 10:03 am
Forum: Radio Programming
Topic: need help getting R1801 to prog MSF5k prom
Replies: 13
Views: 1203

I have the 5817B version eeprom adapter, and the eeproms are 2732As. Version 8 on the R1801 also. Anyone know if I need to check anything on the 5817B adapter? Any other ideas? 2732 series chips are UV erase. If you're trying to program what you think is a blank one, and it is not completely blank,...
by kc7gr
Wed Feb 21, 2007 12:30 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Low band Maxtrac output problem
Replies: 7
Views: 485

Actually...

The reason your power is going through the roof is because the logic board's programming has range-specific settings tied to whatever split the radio was initialized for. Exceeding that initial range goes outside the lookup table, and causes the power to go full-bore. A more elegant solution than th...
by kc7gr
Fri Feb 09, 2007 8:41 am
Forum: Computer/Technical Assistance
Topic: Laptop and GPS suggestions?
Replies: 10
Views: 1692

If most of your navigation is going to be domestic U.S., I would look at DeLorme's Street Atlas package. Great UI, and it can interface to a variety of GPS receivers (pretty much anything that spits NMEA sentences). If you expect to do extensive navigation in Canada, Microsoft Streets & Trips ha...
by kc7gr
Mon Jan 22, 2007 1:06 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Whats this cable? UPDATE!
Replies: 12
Views: 964

That be the one...

You are indeed correct. More specifically, our Y-cable for interconnecting the area receiver was P/N YKN4231A. It has a thick cable coming out of the 'T' portion, terminated in a D-sub 25 connector. The bad news is that they are not programming cables out of the box. The good news is that they can b...

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