[net.micro.cbm] 1200 baud modem query

awinterb@udenva.UUCP (Art Winterbauer) (07/05/86)

I'm trying to decide whether I
should buy an Anchor 6470 300/1200
baud modem or the Commodore 1670
300/1200 baud modem (I think the
model numbers are correct).  There's
quite a gap in price at the store
in which I saw them because, the clerk
said, the Anchor model is being
discontinued.  Are there any major
differences between the two?  Do
they both operate well at 1200 baud?
Do they come with emulators?

Thanks,

Art

udenva!awinterb

root@ozdaltx.UUCP (root) (07/08/86)

 Be sure you try the modem out befor you leave the store. I have
several users on this system running Commodores and the 1670, and
they tell me it is letting a tremedous amount of "garbage" though
to their computers in an on-line situation.
Scotty
...ihnp4!killer!ozdaltx!root

DISCLAIMER:
"This system is mine, so this really isn't necessary!"

dean@hyper.UUCP (Dean Gahlon) (07/08/86)

> I'm trying to decide whether I
> should buy an Anchor 6470 300/1200
> baud modem or the Commodore 1670
> 300/1200 baud modem (I think the
> model numbers are correct).  There's
> quite a gap in price at the store
> in which I saw them because, the clerk
> said, the Anchor model is being
> discontinued.  Are there any major
> differences between the two?  Do
> they both operate well at 1200 baud?
> Do they come with emulators?
> 
> Thanks,
> 
> Art
> 
> udenva!awinterb

If you're planning on using the modem with any commercial or public domain
terminal programs, stay away from the Anchor. Their stuff uses a strange
protocol that isn't compatible with anything that I know of. 
	I bought the Anchor 6490 (1200-baud modem at Target for $99) a couple
of weeks ago. I took it back the next day, because it  wouldn't work with
*any* of the five terminal programs I've  got. I could get it to work with
the terminal program that came with it partially (i.e., I could get it to
dial, but it didn't want to do anything once it connected). Nothing else
could even persuade it to dial out. 

porter@cbmvax.UUCP (07/12/86)

> 
>  Be sure you try the modem out befor you leave the store. I have
> several users on this system running Commodores and the 1670, and
> they tell me it is letting a tremedous amount of "garbage" though
> to their computers in an on-line situation.
> Scotty
> ...ihnp4!killer!ozdaltx!root
> 

My email bounced once, so I am not sure I got through.

The 1670 has a switch on the back of the modem for "line balance".
In noisy situations, try this switch.  It changes the impedance of
the telephone line (which every claims is 600 ohms, but no two
phone lines are ever the same, and never 600 on the dot)  which
may be a problem is you are dealing with a PBX system.

We have the world's worst PBX at commodore (Northern Telecom)
and ANY/ALL modems available on the open market have terrible
noise problems, unless they have adaptive equilization,
or in the case of the 1670, a line balance switch.

Hope this helps,
Jeff Porter
Commodore Engineering