4 Apr
2007
4 Apr
'07
3:10 p.m.
Ok, is there a known severe RFI problem with mounting a RX02 directly on top
of a RL02 in an H960???
I went back to look at the "RL02 faults when RX02 is on" problem. I had left
the rear top cover of the RL02 up in the service position (with the drive
extended from the rack). I retested without touching anything. Sure enough,
the problem was "gone". The RL02 wouldn't fault no matter what. So I put
that rear top cover back down and screwed in the 4 screws, then pushed the
RL02 back into the rack and voila - the problem reoccured. The RL02 will
fault just after spinup IF the RX02 (which is mounted directly above it) is
powered on. Aha... I was now thinking a cable problem! I figured pushing the
RL02 in and out of the rack seemed to be the causative factor, bending a
cable just right or something.
So I pulled the RL02 fully out front on the rails, and the problem went away
(with the RX02 turned on just above it, but back in the rack). So with this
configuration I figured that the problem occured when I pushed the RL02 back
into the rack as it must jiggle some cables. I decided to try THIS...
I extend the RL02 out the front and power up everything, including the RX02.
The RL02 spins up just fine, no fault. Once it is ready... I start pushing
the RL02 back in the rack, very slowly. After going back about 7 or 8
inches, the ready light starts to flash. I pull the drive outwards 1/2 inch
and the ready light stops flashing. Push the RL02 in 1/2 inch and it starts
flashing again. If I push the RL02 in another 2 or 3 inches after the ready
light starts flashing, the drive faults. This is not a freak occurance, it
is completely reproduceable. This makes me think bad cables.
However, if I go and look in back at the cables when the drive is right at
the point the ready light starts to flash, there are no cables being moved
even slightly. I can move the RL02 cables and RX02 cables by hand, the drive
doesn't fault. What is even MORE wierd... if I move the RL02 drive inward
until the ready light starts to flash, then unplug power to the RX02 (the
power cable for the RX02 is around the front, so I can unplug it without
disturbing any cables at all)... the RL02 ready light stops flashing. This
would make me think it is NOT cables, and it seems to be proxmity of the top
of the RL02 drive to the bottom of the RX02 drive.
I know everyone probably thinks I'm nuts, but has anyone heard of a reason
not to mount a RX02 directly over an RL02???
Jay
4 Apr
4 Apr
3:22 p.m.
On Wednesday 04 April 2007 15:10, Jay West wrote:
Ok, is there a known severe RFI problem with mounting
a RX02 directly
on top of a RL02 in an H960???
<snip>
I know everyone probably thinks I'm nuts, but has
anyone heard of a
reason not to mount a RX02 directly over an RL02???
The RL02 top is plastic, so there's minimal if any RF/EMI shielding
between whatever is above the drive, and the electronics inside.
I would try placing a grounded piece of sheet metal in between them, as
an RF/EMI shield, and see if that helps.
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
3:25 p.m.
And another test....
If the RL02 is fully extended and stationary, I can recreate the behaviour
by slowly extending the RX02 as well. When the rx02 gets extended to a
certain point just above the RL02 the RL02 ready light will start flashing
(and it actually flashes faster the more the RX02 is moved out, flashes
slower if you inch the RX02 back)... and if you keep moving the RX02 out the
RL02 will fault.
This sure seems like some kinda RFI or something :\
Jay
3:34 p.m.
On Wed, 2007-04-04 at 14:25 -0500, Jay West wrote:
And another test....
If the RL02 is fully extended and stationary, I can recreate the behaviour
by slowly extending the RX02 as well. When the rx02 gets extended to a
certain point just above the RL02 the RL02 ready light will start flashing
(and it actually flashes faster the more the RX02 is moved out, flashes
slower if you inch the RX02 back)... and if you keep moving the RX02 out the
RL02 will fault.
This sure seems like some kinda RFI or something :\
Stop, stop! You're making me want to pull my PDP-11 rack to bits and
try it...
I will, if you think it will help you track your problems down. I still
smell a dodgy supressor or worn motor though.
Gordon
3:27 p.m.
On Wed, 2007-04-04 at 14:10 -0500, Jay West wrote:
I know everyone probably thinks I'm nuts, but has
anyone heard of a reason
not to mount a RX02 directly over an RL02???
It does seem odd, but maybe the motor in the RX02 is a bit hashy?
I know that my PDP-11/73 (http://pdp11.kicks-ass.net) has the RX02 at
the top of the cabinet, then the OEM processor box, then the RL02s
below. I assumed it was for weight...
Gordon
8:52 p.m.
On some RL02 cables, the drive WILL FAULT if your ground is not secured. I
had one cable (traded it) that did not do this, and am currently using a
cable that does do this. The drive has zero problems with the ground
attached but will fault immediately if I remove it.
In short, be sure your ground wire/eye is still attached to the card end of
the cable, and that it is secured to the chassis ground (there is a lug for
this on the back of my BA11-SA)
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Gordon JC Pearce
Sent: Wednesday, April 04, 2007 2:28 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: 11/45 RL02 faults when RX02 is on
On Wed, 2007-04-04 at 14:10 -0500, Jay West wrote:
I know everyone probably thinks I'm nuts, but
has anyone heard of a
reason not to mount a RX02 directly over an RL02???
It does seem odd, but maybe the motor in the RX02 is a bit hashy?
I know that my PDP-11/73 (http://pdp11.kicks-ass.net) has the
RX02 at the top of the cabinet, then the OEM processor box,
then the RL02s below. I assumed it was for weight...
Gordon
9:51 p.m.
On Apr 4, 2007, at 3:27 PM, Gordon JC Pearce wrote:
As an aside...that's a damn nice looking system; who made the
processor box? I've used a lot of third-party DECish stuff, and I've
never seen one quite like that.
-Dave
--
Dave McGuire
Port Charlotte, FL
I know
everyone probably thinks I'm nuts, but has anyone heard of
a reason
not to mount a RX02 directly over an RL02???
It does seem odd, but maybe the motor in the RX02 is a bit hashy?
I know that my PDP-11/73 (http://pdp11.kicks-ass.net) has the RX02 at
the top of the cabinet, then the OEM processor box, then the RL02s
below. I assumed it was for weight...
5 Apr
5 Apr
3:01 a.m.
On Wed, 2007-04-04 at 21:51 -0400, Dave McGuire wrote:
On Apr 4, 2007, at 3:27 PM, Gordon JC Pearce wrote:
As an aside...that's a damn nice looking system; who made the
processor box? I've used a lot of third-party DECish stuff, and I've
never seen one quite like that.
Baydel. It's a pretty chunky box - lots of very thick steel. As an
aside, I contacted Baydel recently. They're still going, but the guy I
emailed had just dumped the last of his PDP-11 stuff a couple of months
before "because you can't hang on to everything..."
Ah well.
Gordon
I know
everyone probably thinks I'm nuts, but has anyone heard of
a reason
not to mount a RX02 directly over an RL02???
It does seem odd, but maybe the motor in the RX02 is a bit hashy?
I know that my PDP-11/73 (http://pdp11.kicks-ass.net) has the RX02 at
the top of the cabinet, then the OEM processor box, then the RL02s
below. I assumed it was for weight...
3:12 p.m.
On Apr 5, 2007, at 3:01 AM, Gordon JC Pearce wrote:
As an aside...that's a damn nice looking system; who made the
processor box? I've used a lot of third-party DECish stuff, and I've
never seen one quite like that.
Baydel. It's a pretty chunky box - lots of very thick steel. As an
aside, I contacted Baydel recently. They're still going, but the
guy I
emailed had just dumped the last of his PDP-11 stuff a couple of
months
before "because you can't hang on to everything..."
Ah well.
Sounds like ISS: "Incompatible Spouse Syndrome". I will keep an
eye out for those boxes; it sure does look nice and beefy.
-Dave
--
Dave McGuire
Port Charlotte, FL
I know
everyone probably thinks I'm nuts, but has anyone heard of
a reason
not to mount a RX02 directly over an RL02???
It does seem odd, but maybe the motor in the RX02 is a bit hashy?
I know that my PDP-11/73 (http://pdp11.kicks-ass.net) has the
RX02 at
the top of the cabinet, then the OEM processor box, then the RL02s
below. I assumed it was for weight...
11 Apr
11 Apr
8:38 a.m.
On Thu, 2007-04-05 at 15:12 -0400, Dave McGuire wrote:
Sounds like ISS: "Incompatible Spouse
Syndrome". I will keep an
eye out for those boxes; it sure does look nice and beefy.
I think he was just having an office clearout. I don't know if you'd
find them in the US - Baydel are a UK company and there's probably not a
lot of sense in shipping a big heavy OEM PDP-11 across the pond.
That's probably why no-one has any boot ROMs for them. I expect that
any other examples are long gone...
Gordon
4 Apr
4 Apr
3:31 p.m.
On 4/4/07, Jay West <jwest at classiccmp.org> wrote:
Ok, is there a known severe RFI problem with mounting
a RX02 directly on top
of a RL02 in an H960???
I do not know of one - IIRC, we used to do that often, 20 years ago,
but it's entirely possible that it's an issue in your case. Do you
have another set of drives to experiement with? Perhaps it's not
_all_ RX02 and RL02 drives, just the particular ones you have right
there. Can you rig up some sort of RFI shield and slide it between
the drives when you are showing the fault? What about if you set the
RL02 on the ground, then raise and lower the RX02? Obviously, there'd
be a risk of cable flextion, potentially tainting your experiment, but
if, as you describe, front-to-back movement causes the problem to
reliably appear and disappear, cable flexion may not be your problem.
One thing to check is the RL02 cable itself. I've seen a lot of
flex-damaged cables over the years. If you have a different drive
cable, I guess I'd probably try replacing that first and attempting to
reproduce your now-documented behavior. Broken-down sheilding might
even be contributing to your problem.
Good luck with your sleuthing.
-ethan
3:52 p.m.
Jay wrote:
Ok, is there a known severe RFI problem with mounting
a RX02
directly on top of a RL02 in an H960???
Forgive the delay in writing about this. I had the EXACT same problem
with RXO2 mounted on top of an RL02 drive on y PDP 11/34A. At the time,
my suspicion was that the gigantic transformer in the power supply of
the RX02 was generating some kind of magnetic field tha was disturbing
the RL02. I mounted the RX02 underneat the RL02, andh never had any
problems since.
Rick Bensene
The Old Calculaor Web Museum
http://oldcalculatormuseum.com
5:33 p.m.
Forgive the delay in writing about this. I had the
EXACT same problem
with RXO2 mounted on top of an RL02 drive on y PDP 11/34A. At the time,
my suspicion was that the gigantic transformer in the power supply of
That's a ferroresonat transformer IIRC (why, I have no idea, there are
conventioal electronic regulator circuits in the PSU too). There could be
considerable stray field from that.
I still suspect the spindle motors of the RC02 first, but I've got no
real evidence for that.
Jay, can you rearrange the items in your rack to move the RX02 and RL02
apart?
-tony
5 Apr
5 Apr
1:03 p.m.
Jay wrote:
Ok, is there a known severe RFI problem with mounting
a RX02
directly on top of a RL02 in an H960???
I had exactly this same problem with a RL02 and RX02 in my PDP-8/A. In my
case, mounting the RX02 _under_ the RL02 (rather than on top of it) did
work.
Bob Armstrong
4 Apr
4 Apr
5:26 p.m.
Really sounds like something in the RX02 power supply is freaking out
the drive heads in the RL02
Curt
Jay West wrote:
Ok, is there a known severe RFI problem with mounting
a RX02 directly
on top of a RL02 in an H960???
I went back to look at the "RL02 faults when RX02 is on" problem. I
had left the rear top cover of the RL02 up in the service position
(with the drive extended from the rack). I retested without touching
anything. Sure enough, the problem was "gone". The RL02 wouldn't fault
no matter what. So I put that rear top cover back down and screwed in
the 4 screws, then pushed the RL02 back into the rack and voila - the
problem reoccured. The RL02 will fault just after spinup IF the RX02
(which is mounted directly above it) is powered on. Aha... I was now
thinking a cable problem! I figured pushing the RL02 in and out of the
rack seemed to be the causative factor, bending a cable just right or
something.
So I pulled the RL02 fully out front on the rails, and the problem
went away (with the RX02 turned on just above it, but back in the
rack). So with this configuration I figured that the problem occured
when I pushed the RL02 back into the rack as it must jiggle some
cables. I decided to try THIS...
I extend the RL02 out the front and power up everything, including the
RX02. The RL02 spins up just fine, no fault. Once it is ready... I
start pushing the RL02 back in the rack, very slowly. After going back
about 7 or 8 inches, the ready light starts to flash. I pull the drive
outwards 1/2 inch and the ready light stops flashing. Push the RL02 in
1/2 inch and it starts flashing again. If I push the RL02 in another 2
or 3 inches after the ready light starts flashing, the drive faults.
This is not a freak occurance, it is completely reproduceable. This
makes me think bad cables.
However, if I go and look in back at the cables when the drive is
right at the point the ready light starts to flash, there are no
cables being moved even slightly. I can move the RL02 cables and RX02
cables by hand, the drive doesn't fault. What is even MORE wierd... if
I move the RL02 drive inward until the ready light starts to flash,
then unplug power to the RX02 (the power cable for the RX02 is around
the front, so I can unplug it without disturbing any cables at all)...
the RL02 ready light stops flashing. This would make me think it is
NOT cables, and it seems to be proxmity of the top of the RL02 drive
to the bottom of the RX02 drive.
I know everyone probably thinks I'm nuts, but has anyone heard of a
reason not to mount a RX02 directly over an RL02???
Jay
5:27 p.m.
Ok, is there a known severe RFI problem with mounting a RX02 directly on top
of a RL02 in an H960???
I've not heard of one, but then again, I've never actually tried that
mounting arrangement. I know DEC stated that certain peripherals should
have their own racks, I always figured this was, in part, to sell more
cabinets, but I assume there might have been some interference issues as well
I went back to look at the "RL02 faults when RX02 is on" problem. I had left
the rear top cover of the RL02 up in the service position (with the drive
extended from the rack). I retested without touching anything. Sure enough,
the problem was "gone". The RL02 wouldn't fault no matter what. So I put
that rear top cover back down and screwed in the 4 screws, then pushed the
RL02 back into the rack and voila - the problem reoccured. The RL02 will
fault just after spinup IF the RX02 (which is mounted directly above it) is
powered on. Aha... I was now thinking a cable problem! I figured pushing the
RL02 in and out of the rack seemed to be the causative factor, bending a
cable just right or something.
The spindle motor in each drive of the RC02 is a fairly crude induction
motor. I could well believe it has enough stray field to cause
interferende (It's not that well shielded). Maybe that's being picked up
by the RL's head and upsetting the servo.
Here's an idea. Take the fan plenum off the back of the RC02 (4 screws,
IIRC, and uplug the fan calbe). Then unplug the 3 pin connector on the
back of each drive (115V AC to the spindle motor). Try the system now.
Obviously the RC02 can't run (the spindles won't be turning), but if
there are no disks in the drives the system can't realise this. Have the
RC02 powered up (so its PSU is running, and all the logic is powered) and
see if the RL behaves now. If so, it pretty much confirms it's
interference from the RC02's spindle motors.
-tony
5 Apr
5 Apr
4:50 a.m.
On Wed, 4 Apr 2007, Jay West wrote:
Ok, is there a known severe RFI problem with mounting
a RX02 directly on top
of a RL02 in an H960???
Interesting, I have nearly the same configuration, a 11/45 mounted in a
H960 cabinet, a RX02, a RL02 and a RK05. Everything's working fine. The
only difference is that I have the RL02 above the RX02 because the RX02 is
rather short and won't block the air circulation to the CPU chassis. So my
cabinet looks like this:
+--------+
| RK05 |
+--------+
| RL02 |
+--------+
| RX02 |
+--------+
| |
| CPU |
| |
+--------+
o o
Christian
10:19 a.m.
Ethan Dicks wrote:
On 4/5/07, Christian Corti <cc at corti-net.de>
wrote:
Ouch my back...
My 50" rack is:
VT340 (on top)
+--------+
| shelf | (loose media, books)
+--------+
| RD/RX |
+--------+
| 11/73 |
+--------+
| RX02 |
+--------+
| RL02 |
+--------+
o o
FYI: the bottom plate for my RX02 is steel so if the interference was
magnetic that may be a difference. It been this way for many years
with no issues.
Notes:
This is a very non-DEC config! Ir's a result of hybriding several
systems together to get the most in the minimum space.
The 11/73 is in a BA11 (s) box with a Micropdp-11 backplane mounted
for serpentine slots. That way it fits all the memory and IO.
The RL controller is RlV21 the single board version for RL drives.
The shelf above the RX02 with the RD/RX has several RD52s(2) and RX33.
It's a standard rack shelf with drives and a power supply for them and
the write/ready buttons from a BA123 as I use a RQDX3 and distribution
board from a BA123 as the disk interface.
Allison
... So my cabinet looks like this:
+--------+
| RK05 |
+--------+
| RL02 |
+--------+
| RX02 |
+--------+
| |
| CPU |
| |
+--------+
o o
Wow... that RK05 must have been fun to get up there. 
4:35 p.m.
>> | RL02 |
>> +--------+
>> | RX02 |
| RX02 |
+--------+
| RL02 |
I do note RL02-on-RX02 versus RX02-on-RL02; if one has something
important near the top or bottom of its space, that could well be the
relevant difference here.
/~\ The ASCII der Mouse
\ / Ribbon Campaign
X Against HTML mouse at rodents.montreal.qc.ca
/ \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
2:19 p.m.
On Apr 5, 2007, at 9:37 AM, Ethan Dicks wrote:
Yeah, I felt a shooting pain in my groin just looking at that
drawing. I sure hope two people were involved!
-Dave
--
Dave McGuire
Port Charlotte, FL
... So my
cabinet looks like this:
+--------+
| RK05 |
+--------+
| RL02 |
+--------+
| RX02 |
+--------+
| |
| CPU |
| |
+--------+
o o
Wow... that RK05 must have been fun to get up there. 
4:04 p.m.
Dave McGuire wrote:
On Apr 5, 2007, at 9:37 AM, Ethan Dicks wrote:
Yeah, I felt a shooting pain in my groin just looking at that
drawing. I sure hope two people were involved!
Possibly more. It can be problematic for two people to get an RK05 to
go into a space *halfway* up a rack, let alone all the way up there.
Peace... Sridhar
... So my
cabinet looks like this:
+--------+
| RK05 |
+--------+
| RL02 |
+--------+
| RX02 |
+--------+
| |
| CPU |
| |
+--------+
o o
Wow... that RK05 must have been fun to get up there.
6 Apr
6 Apr
5:11 a.m.
On Thu, 5 Apr 2007, Sridhar Ayengar wrote:
Possibly more. It can be problematic for two people to get an RK05 to go
into a space *halfway* up a rack, let alone all the way up there.
Besides, the cabinet is only 1,80m tall, and I've also mounted several
RK05s in other cabinets in different positions alone, and no, I'm not
Arnold ;-))
You may be thinking of a HP7905 or DEC RA80, now these are different
beasts... (we had the RA80 pushed into a shelf at about 2,0m high, and
also pulled it out again when we had to move to our new building four
years ago, and we were only two)
Christian
Wow... that RK05 must have been fun to get up there.
Yeah, I felt a shooting pain in my groin just looking at that drawing. I
sure hope two people were involved! 
7:41 p.m.
Christian Corti <cc at corti-net.de> wrote:
You may be thinking of a HP7905 or DEC RA80, now these
are different
beasts... (we had the RA80 pushed into a shelf at about 2,0m high, and
also pulled it out again when we had to move to our new building four
years ago, and we were only two)
The trick with RA80's (and Fuji Eagles, and other late 10.5"/14"
Winchesters) is to pull the HDA from the box, mount the box in
the rack, and THEN put the HDA in the box.
Eagles and RA8x's are remarkably modular. You can also reasonably
pull the power supply from the Eagle frame for even less weight
(with the HDA and the PS out, it's mostly sheet metal and some
framing...)
Tim.
7 Apr
7 Apr
5:29 p.m.
The trick with RA80's (and Fuji Eagles, and other
late 10.5"/14"
Winchesters) is to pull the HDA from the box, mount the box in
the rack, and THEN put the HDA in the box.
I believe that's suggested in the user manual for the Rx80 series.
It also has the advantage that if you have an 'accident' and drop the
casing while you're rack-mounting it, you don't drop the most delicate
part -- the HDA -- because you've removed it.
-tony
10 Apr
10 Apr
3:40 a.m.
On Fri, 2007-04-06 at 19:41 -0400, Tim Shoppa wrote:
Christian Corti <cc at corti-net.de> wrote:
Now you tell me, *after* I've carried one out to the van. They're not
light, these Fujitsu Eagles...
Gordon
You may be thinking of a HP7905 or DEC RA80, now
these are different
beasts... (we had the RA80 pushed into a shelf at about 2,0m high, and
also pulled it out again when we had to move to our new building four
years ago, and we were only two)
The trick with RA80's (and Fuji Eagles, and other late 10.5"/14"
Winchesters) is to pull the HDA from the box, mount the box in
the rack, and THEN put the HDA in the box.
Eagles and RA8x's are remarkably modular. You can also reasonably
pull the power supply from the Eagle frame for even less weight
(with the HDA and the PS out, it's mostly sheet metal and some
framing...)
5 Apr
5 Apr
9:15 p.m.
Dave McGuire <mcguire at neurotica.com> wrote:
On Apr 5, 2007, at 9:37 AM, Ethan Dicks wrote:
Yeah, I felt a shooting pain in my groin just looking at that
drawing. I sure hope two people were involved!
I've done far worse by myself :-).
Typically: Lay rack down on side. Install heavy stuff on "top" (which
is now ... right). Lift rack back up. (Actually both easier and harder
than it sounds. Easier because after you get past the first foot or two
the bottom is carrying increasing fractions of the weight. Harder
because the bottom is trying to slide away from you!). Then you
put the heavy stuff in the bottom.
Tim.
... So my
cabinet looks like this:
+--------+
| RK05 |
+--------+
| RL02 |
+--------+
| RX02 |
+--------+
| |
| CPU |
| |
+--------+
o o
Wow... that RK05 must have been fun to get up there.
4:14 p.m.
Wow... that RK05 must have been fun to get up there.
When I rack-mounted my RK05s (I have them in the 5th 'bay' from the
bottom of a pair of H980s), I took them apart first. Took off the covers,
all the boards, the PSU module, front panel, positioner/heads, spindle,
spindle motor, blower, etc.
The empty chassis wasn't too hard to handle and get onto the rails, and
then I just had to put every back in place (which wasn't hard, and
amazingly the heads didn't need aligning).
-tony
8:08 p.m.
Tony Duell wrote:
I put all drives into racks fully assembled. Of course I use an
"equipment lift" that makes the job easy. I wouldn't even try to rack a
Fujitsu Eagle (140+lbs) without it. Compared to Eagles, RK05's are
light and RL02's are feather weights. :-)
--
TTFN - Guy
Wow... that
RK05 must have been fun to get up there.
When I rack-mounted my RK05s (I have them in the 5th 'bay' from the
bottom of a pair of H980s), I took them apart first. Took off the covers,
all the boards, the PSU module, front panel, positioner/heads, spindle,
spindle motor, blower, etc.
The empty chassis wasn't too hard to handle and get onto the rails, and
then I just had to put every back in place (which wasn't hard, and
amazingly the heads didn't need aligning).
12:16 p.m.
Brad Parker wrote:
Guy Sotomayor wrote:
I'll have to look up who manufactured mine. It has a 500# capacity and
can lift a load to about 12' or so. It's counterweighted (400#
counterweight) so it doesn't need long stabilizing legs to keep it from
tipping over (so I can get it right up to a rack).
Places like Global (globalindustries.com) has stuff similar, but new
they're $800-1000. I picked mine up used for ~$350 and it's been worth
every $0.01 (I wish I had another one).
--
TTFN - Guy
I put all drives into racks fully assembled. Of
course I use an
"equipment lift" that makes the job easy.
I've been look for one - can you share which one you've used?
those 14" drives are damn heavy :-)
8:36 a.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Christian Corti
Sent: vrijdag 6 april 2007 10:54
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: 11/45 RL02 faults when RX02 is on
On Thu, 5 Apr 2007, Ethan Dicks wrote:
Agreed! I have an RK05/f and an RK05/j in the top 2 positions
of the H960 rack. No, I did not put them there alone :-)
Up till the 4th position (from the ground) I can do by myself.
It is just getting the slide part of the RK05 drive aligned to
the slide part in the rack that makes the task "heavy".
happy Easter,
- Henk, PA8PDP.
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Wow... that RK05 must have been fun to get up
there.
It wasn't a big problem, a RK05 isn't that heavy.
Christian
5 Apr
5 Apr
8 p.m.
Christian wrote....
Interesting, I have nearly the same configuration, a
11/45 mounted in a
H960 cabinet, a RX02, a RL02 and a RK05.
Someone can probably confirm or deny this... but I thought I remembered
reading somewhere that you weren't supposed to mount anything above a /45 in
an H960 except one device that was not "full depth". Racking more than that
and you caused too much heat buildup. I'm sure putting an RL02 and/or RK05
is not the best idea from a air circulation standpoint.
Jay
6294
days inactive
6301
days old
33 comments
18 participants
participants (18)
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