Batboard

Has anyone taken a sva or ava and turned it in to a programing dock for the radio?

I have a few SVA's laying around and thinking of modifing one out of two. I was thinking of taking one of the universal adapters and add more fingers to it moding it with a dremel so it would fit my astro with the bump, and wiring it up to match the programing cable. Another thing I was thinking was to figure out how to turn on the charger so I had a power to the radio.

Is their some other mod that need to be done to the universal adapter?

Am I up in the night or what? Is it something that could be done?

I have recived the detailed service manuals for both the SVA and the AVA so I have something to go by.

Jerry

Jerry,

First, a friendly warning. There are people in institutions who thought they would be able to put an SVA or an AVA back together once they had figured out how in the first place to get it apart. (Just kidding, of course, but the reassembly is pretty tricky, believe me.) When you do get the top cover to finally slide off be careful that several parts that are held by the plastic don't fall out, as you will have an awful time figuring out where they go when you want to put them back in. Put another way, these units are not at all user friendly when it comes to taking them apart.

Second, there is a reference to converting an SVA to charging and/or programming at http://www.batlabs.com under Model Specific/Saber. It's been a while since I read it but it's there. Also look for AVA information in the section on Astro Sabers. You may also want to do a search on this Board under SVA, AVA, etc.

Regarding using the power lead in the SVA to run the radio, although you put a full 13.8VDC into the back of the unit there has to be some type of current limiting circuit involved for the charger, although I have on many, many occasions monitored a Saber while it's in the SVA with the automatic charging circuit running.

Regards,

Before I posted I did a lot of searching but came up empty. Thanks for the lead on the batlab site, I did'nt eaven think to look there.
About disassembly and reassembly it helped to have the service manual and a rubber mallet.

Jerry

Well It Works. I found out that some of the ntn5487b were reworked and have the Astro Saber universal connector But thay dont have the pin that swiches the antenna but the hole was there so I got some brass rod and installed it in to the hole and soldered it to the anetnna jack and covered it with epoxie, And it work to switch to the external jack. I complely removed the flex cable that goes to the pc board and soldered new wires to pins 3 & 6 and soldered a ground to the anetnna connector and wired it to a rj45 breakout board so all I need is a regular patch cable. The charger works with out the flex connector to the pc board so I have power to the radio. I then got a db25 to rj45 connecton and wired it to the correct pins on the rib. Next I will be wiring up the speaker out so I have that.

JerryS wrote:Well It Works. I found out that some of the ntn5487b were reworked and have the Astro Saber universal connector But thay dont have the pin that swiches the antenna but the hole was there so I got some brass rod and installed it in to the hole and soldered it to the anetnna jack and covered it with epoxie, And it work to switch to the external jack. I complely removed the flex cable that goes to the pc board and soldered new wires to pins 3 & 6 and soldered a ground to the anetnna connector and wired it to a rj45 breakout board so all I need is a regular patch cable. The charger works with out the flex connector to the pc board so I have power to the radio. I then got a db25 to rj45 connecton and wired it to the correct pins on the rib. Next I will be wiring up the speaker out so I have that.

An interesting point is that the DB-25 has a COS line in it for feeding the amplified speaker.

Yes that is true. But since I am using pins 3 & 6 I had to remove the ribbon cable so I will have to use a jumper lead to the correct pins on the PCB, That is what I meant in the first place

JerryS wrote:Yes that is true. But since I am using pins 3 & 6 I had to remove the ribbon cable so I will have to use a jumper lead to the correct pins on the PCB, That is what I meant in the first place

Well I should of studied the schematic better. It looks like all I needed to do was get a DB25 and tie it all together with that.

Pin 4 of the db25 is tied to pin 3 on the universal connector which is "DATA". There is a 5.6V Zener tied to ground, a 270nH Inductor in line, and a 100pF,+/- 5% Capacitor also tied to ground.

Pin 17 of the db25 is tied to pin 6 on the universal connector which is "BUSY". There is a 5.6V Zener tied to ground, a 270nH Inductor in line, and a 100pF,+/- 5% Capacitor also tied to ground.

So the question is.... Will the extra component's in line, mess with the programing of the radio?

Dr. FrankenMod