Search found 23 matches

by ablitz
Mon May 14, 2018 2:08 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

Things are moving solid state, but I don't know that I would say solid state is much more durable than spinning rust - I have seen SSDs fail from too many writes just as much as I have seen disks fail. The single biggest lesson learned is to use off-the-shelf as much as possible - buy your CPU boar...
by ablitz
Mon May 14, 2018 5:07 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

There is a single file that contains the options information for the unit, and it is tied to the CPU. If that file is not corrupted, and you place that file on the image, you should be fine for your options. If you still have the original option install files from Aeroflex, once the unit has had th...
by ablitz
Sun May 06, 2018 9:04 am
Forum: Test Equipment & RF Equipment Alignment
Topic: [Problems with 3 Aeroflex 2975]
Replies: 7
Views: 8644

Re: [Problems with 3 Aeroflex 2975]

Hi I recovered some logic boards of this model and some had faults in the Vcore voltage electrolytic capacitors and others in the PWM oscillator of the processor voltages plus what is very common in this unit really are HDD failures. Were the capacitor on the processor board or the card with the ba...
by ablitz
Mon Apr 30, 2018 3:08 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: [Problems with 3 Aeroflex 2975]
Replies: 7
Views: 8644

Re: [Problems with 3 Aeroflex 2975]

Do you remember if the capacitors were on the processor board with the CPU?
by ablitz
Sun Apr 22, 2018 8:58 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

They are notorious for bad caps on the baseband tray. Check for leakage from capacitors
by ablitz
Mon Mar 19, 2018 5:17 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

Greetings Adrian Im not sure about the Com120 but the IFR 1900 csa has two. One is for the service monitor itseft, storing options and rtc, the other for the cellular section. I think yours has one hopefully ds12887. The ds12887 is y2k compliant, whike the ds1287 is not. Unfortunately I have not fou...
by ablitz
Sun Mar 18, 2018 4:05 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

Just use the values not sure about H4 or g3 but i replaced everything with tantalum caps on the signal and electrolytics in the PS. Hopefully ther will not be a lot of corrosion under the leaky caps. Do you see any dates stamped on chasis?
by ablitz
Sat Mar 17, 2018 8:28 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

Greetings Adrian I have 2 IFR 1900s and there are 2 ds12887 battery clocks. I decided to mount a cr2032 battery holder and grind down the side of each chip to expose the internal battery to save the data. In all i was successfull and found that in one unit both batterires had about 1 volt remaining ...
by ablitz
Sun Feb 25, 2018 6:17 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

I have used mine from 400KHz to 2GHz although the specs state 10 MHz to 2010 MHz
by ablitz
Fri Feb 23, 2018 3:21 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: R2600 service manual????
Replies: 26
Views: 22410

Re: R2600 service manual????

Help, I have a R2670 which had a symptom of morning sickness, it would reboot when cold and then it was okay after warming up. Now it does not boot and no screen. It gives me 1 beep, pause, 3 beeps, pause and 1 beep. Power supply is good except for 40 volt is giving 34 volts. I have a hard copy of ...
by ablitz
Fri Feb 16, 2018 11:32 am
Forum: Test Equipment & RF Equipment Alignment
Topic: "Portable" spectrum analyzer for filter work?
Replies: 10
Views: 9961

Re: "Portable" spectrum analyzer for filter work?

You might want to look at an Anritsu MS2711D with option 21
Googd to 3 GHz
by ablitz
Fri Feb 16, 2018 11:28 am
Forum: Test Equipment & RF Equipment Alignment
Topic: R2600 service manual????
Replies: 26
Views: 22410

Re: R2600 service manual????

I am looking for it too
by ablitz
Fri Feb 16, 2018 9:03 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

Hello all I would like to propose an IFR 1900 topic area if anyone is interested. I bought 2 1900s and have spent more than a year refurbing and appreciating them to share experiences. I read a lot of threads and would love to hear frombthe people that worked on these innovative systems. Having spen...
by ablitz
Fri Feb 16, 2018 9:00 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

Hello all I would like to propose an IFR 1900 topic area if anyone is interested. I bought 2 1900s and have spent more than a year refurbing and appreciating them to share experiences. I read a lot of threads and would love to hear from the people that worked on these innovative systems. Having spen...
by ablitz
Fri Feb 16, 2018 8:51 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

When i powered it up the display was upside down and there were horizontal lines all through it. I turned it off and much later turned it back on after plugging it back in to MY UPS power and it was working fine. Perhaps a power supply issue? Sounds like the actual LCD panel got a glitch when you s...
by ablitz
Sun Nov 05, 2017 6:46 am
Forum: Test Equipment & RF Equipment Alignment
Topic: IFR 1900CSA Problems
Replies: 27
Views: 9512

Re: IFR 1900CSA Problems

Bought 2 IFR 1900 off ebay one just needed the RTC batteries replaced the other just had a cable unplugged on the bottom and reseat cards to fix my errors
by ablitz
Sun Nov 05, 2017 6:41 am
Forum: Test Equipment & RF Equipment Alignment
Topic: R2670 Manual
Replies: 4
Views: 4550

Re: R2670 Manual

Does anyone have a pdf version of an R2660d?
I found a company that refurbs them for $1350.
by ablitz
Thu Nov 02, 2017 6:07 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: To newly registered users: Welcome! Please read...
Replies: 109
Views: 537517

Hello...

I have been reading the forums and I would like to participate. I have been working on electronics for over 50 years since I was a child. I now teach networking and Computer forensics. Hope to be able to become a regular member

Andy
by ablitz
Tue Oct 31, 2017 10:36 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

What is the best course of action regarding aging DS1287 NVRAM on IFR 1900s? Is there a solution to copy the existing data and burn it to a new chip so I do not loose options on both?
Both are currently working although one has a recurring Fail on 16 Power Meter.

Any Help apprciated
by ablitz
Sun Oct 29, 2017 5:50 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

Is there a way to copy the DS1287 on IFR1900? I have 2 that will need to have the batteries replaced.

Any help appreciated
by ablitz
Sat Oct 28, 2017 12:41 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: To newly registered users: Welcome! Please read...
Replies: 109
Views: 537517

Re: To newly registered users: Welcome! Please read...

Hello

I would like to move to regular membership I have a love for restoring test equipment and I would like to share my 40+ in electronics. Not many of us that worked with tubes.

.
by ablitz
Sat Oct 28, 2017 6:47 am
Forum: Test Equipment & RF Equipment Alignment
Topic: IFR 1600S Processor Bd Repair
Replies: 17
Views: 7662

Re: IFR 1600S Processor Bd Repair

Does anyone know how to restore the options on a 1900 after replacing the DS1287 with DS12887? Any way to copy the old data to a new chip?
I have 2 1900s I would like to save
by ablitz
Sat Oct 28, 2017 6:43 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Aeroflex (IFR) Questions
Replies: 629
Views: 295266

Re: Aeroflex (IFR) Questions

I have 2 IFR1900 1 version 1 the other version 4. The oldest has 1500 hrs and looses time so I think the DS1287 batt is low and options display ???. The other box has 5500 hrs but the time and options still work it's the version 4. Any suggestions as to how ro recover after attempting a cr2032 trans...

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