Re: Help with PacComm Modems

[Jeffrey S Austin <n8vna@xxxxxxx>]

Anyone that gets a package that rattles, submit a claim with the carrier at
that time!
                                                        -73's de Jeff

Darrell Bellerive wrote:

> I have just purchased two used PacComm devices. I need some help with the
> jumpers. I sent an email to PacComm about three weeks ago, but no reply. I
> guess I know what kind of support to expect from them. Anyone familiar with
> the insides of these units?
>
> When they arrived from the shipper, one box had a rattle, and upon opening
> the case I found a loose jumper and a loose red wire. This box is marked
> Narrowband DFM TNC on the front. There are two circuit boards the smaller
> is marked:
> TMR Rev 1.92 S/N 21563
> A chip on this board has this label:
> PacComm TNC-NB96
> Rel 3.2.14/DED 2.6
> A plug in board is marked:
> DCD UNIV 3105 STATE ADAPTER
>
> The loose red wire is soldered to WP3 on this board.
>
> The jumpers are set as follows:
> JPA   open
> JPB   1-2
> JPC   not equipped
> JPD   no jumper
> JPL   normal
> JPRA  closed
> JPROM not equipped
> JPS   H
> JPSW  closed
> JPBS  1-2
> JPT 1 off
> JPT 2 off
> JPT 3 off
> JPT 4 off
> JPT 5 off
> JPT 6 on
> JPT 7 off
> JPT 8 off
>
> The other circuit board (larger) is marked:
> PacComm DFM-SA Rev 1.4 S/N 97112
> A chip on the board is labeled:
> PacComm/63RUH DFM
> DFM TX Rev. 1 11/91
>
> The jumpers are set as follows:
> JPCLK 2-3
> JPD   2-3
> JPROM open
> JPX32 2-3
> JP1   1-2
> JP2   1-2
> JP3   1-2
> JP4   1-2
> JP5   1-2
> JP6   open
> JP7   closed
> JP8   open
> JP9   2-3
> JP10  open
> JP11  open
> JP15  no jumper
> JP16  no jumper
> JP17  2-3
> JP18  1-2
> JP20  1-2
> JP21  1-2
> JP22  1-2
> JP23  1-2
> JP24  closed
> JP25  open
> JP26  closed
> JB2   7-8
> JB3   1-2
> JB10-1 R
> JB10-2 L
> JB10-3 R
> JB10-4 R
> JB10-5 R
> JB10-6 R
> JB10-7 R
> JB10-8 R
>
> Please tell me where to connect the red wire and where the loose jumper
> should be installed.
>
> The other box is marked PSK-1. There is one circuit board marked:
> Digital Signal Systems DSS04 REV F S/N 11085
> One IC is labeled:
> PacComm PSK-1
> Release 2.10
>
> The jumpers are set as follows:
> JP1  open
> JP2  no jumper
> JP3  no jumper
> JP4  no jumper
> JP5  open
> JP6  3-4
> JP9  no jumpers
> JP20 5-7, 6-8
> JP21 closed
>
> As they are used I want to confirm that all jumpers in both boxes are
> correctly set. I plan on using the TNC/Modem for 1200 baud terrestrial
> packet, 1200 baud and 9600 baud satellite and 400 baud telemetry. The radio
> will be an Yaesu FT-847 if that makes a difference to the jumper setup. Are
> any EPROM or other device upgrades that I should have?
>
> I tried to follow the manuals, but am not very familiar with packet modems
> or TNCs and found the manuals very confusing.
>
> Please email me directly as I am not currently subscribed to the AMSAT-BB
> mailing list.
>
> Thanks very much in advance!
>
> Darrell Bellerive
> VE7CLA
> email: ve7cla@amsat.org