I'm not sure about the MSR2000, I was in the portable shop already, but,
typically, Motorola uses multi-layer PC boards in most of their radios. Often,
one of those layers is mostly ground plane, a huge heat sink. It's not unusual
to require a higher wattage iron to flow solder on a
I'm told C4 is much more effective and you need less of it!
T.
--- In Repeater-Builder@yahoogroups.com, Gordon Cooper zl...@... wrote:
Maybe a little Black Powder might be needed?
Gordon ZL1KL
Tauranga N.Z.
Thomas Oliver tsoli...@... wrote:
For de-soldering I use a de-solder iron with a squeeze
bulb on it from
Radio Shack, works great.
http://www.radioshack.com/product/index.jsp?productId=2062731
tom
Nice for most things but not removing the final modules from
an MSR-2000 and/or Micor RF
Eric Grabowski ejgrabow...@... wrote:
A recent thread discussed a problem disassembling a
MSR2000 continuous duty PA. That triggers this query:
Does anyone know if Motorola used a higher temperature
solder on the MSR2000 units?
Yes
s.
What do they use? What alloy? Seems that radio was out too early for RoHS?
Tom DGN
--- In Repeater-Builder@yahoogroups.com, skipp025 skipp...@... wrote:
Eric Grabowski ejgrabowski@ wrote:
A recent thread discussed a problem disassembling a
MSR2000 continuous duty PA. That triggers
Wattage is of less importance than tip temperature and size. Weller's
better irons came with tips that were available in 3 ranges, approx 600, 70,
and 800 degrees F. The 800 degree tips were the only ones that I have ever
had any degree of success with. Other manufacturers use various types
That may be what the mask specifies. I have seen the curve plots of the
mask. Now run the numbers and see what kind of signal levels that really
equates to when the DTV station is running say 1 MW. It looks pretty on
paper, it's not so pretty in the real world.
- Original Message -
On 8/2/2010 11:15 PM, skipp025 wrote:
... The entire project including obtaining the parts from
recycled radios takes me about 4.5 hours with beverage of
choice and some decent AM Talk-Radio playing at low back-ground
volume level (no, not the right-wing whack job stuff).
As opposed to the
On 8/2/2010 11:23 PM, Glenn Little WB4UIV wrote:
I do not know about Nextel, but, the US DTV signal fits into a 6 MHz
bandwidth.
We use a mask filter to ensure that the bandwidth is no more than 6 MHz.
500 kHz from band edge= -47 dB
6 MHz from band edge= -110 dB
73
Glenn
WB4UIV
And
Apparently no one here got the moto memo on working with giant heat-sinks.
First you only need a 30-40 watt iron to work on them as moto did at the
factory The secret is.. raising the heat-sink to about 3-400
degrees while you are working on what needs to be done. PS ..
Eric Grabowski ejgrabowski@ wrote:
A recent thread discussed a problem disassembling a
MSR2000 continuous duty PA. That triggers this query:
Does anyone know if Motorola used a higher temperature
solder on the MSR2000 units?
skipp025 skipp025@ wrote:
Yes
s.
wb6dgn wb6...@...
Bill wrote:
Apparently no one here got the moto memo on working with giant
heat-sinks. First you only need a 30-40 watt iron to work on them as moto
did at the factory The secret is.. raising the heat-sink to
about 3-400 degrees while you are working on what needs to be
The amplifier in question is a MSR2000 VHF, not
UHF - no ceramics to worry about - no oven required.
Kevin
Don't know what you'd really use the Oven for... For
the VHF PA (like the Micor) I switch from the mondo
iron to the trusty Weller 550 and 8200 guns. I feel
it's better get on and
Dick rert...@ix.netcom.com wrote:
I missed the original posting. Was someone looking to buy GMRS mobiles and
handhelds, and perhaps even a GMRS repeater? If so contact n5sx...@charter,com
73's group
Where is that written? Nothing that I see in the rules covering ERP except a
maximum TX power out of 50 watts under 47CFR95.135
From: Dick rert...@ix.netcom.com
To: Repeater-Builder@yahoogroups.com
Sent: Mon, August 2, 2010 10:31:24 PM
Subject: Re:
I use the mass of an old martial-aid size soldering iron, which
are often passed over by uninformed souls shopping at Ham Flea
Markets.
s.
Skipp, you kill me!
They used those in sheet metal shops and doing rain gutters. Got one and it
is amazing on touch and ping off it comes!.
Hmmm my comments were lost.
Oh well I just commented you kill me Skipp.
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Kevin King
Sent: Tuesday, August 03, 2010 2:54 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE:
What's nastier is T-band sharing. WCVB in Boston on channel 20 routinely
hammers
a number of 500 MHZ public safety systems in New Jersey.
From: Milt men...@pa.net
To: Repeater-Builder@yahoogroups.com
Sent: Tue, August 3, 2010 6:56:05 AM
Subject: Re:
Hello all,
I have having a severe drift problem on my GE Mastr II 2 meter repeater. The
transmit freq will drift nearly 2 KHZ over a 5-10 minute period. I have changed
exciters and used a different ICOM but no improvement. The building that I am
in is not ventilated and is very very hot. I put
Only if your crystals in the ICOMs are from BOMAR.
David
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of steve
Sent: Tuesday, August 03, 2010 5:33 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Mastr II drift problem
Gentlemen (And Ladies)
I have a MASTR II Exec mobile here, I think its a UHF Repeater. I want to
confirm with you - but I am curious what RCC stands for. Comb number
YS55SSXX88A. Nothing comes up on Google and not sure which Comb spec sheet to
look this up with Hall Electronics or here on RB
If it is easy to do, go with the single lenght. Less connector losses and
chances of failure due to water ingress or corrosion etc.
Greg
Sent from your Iphone.
-Original Message-
From: Craig fxbuil...@yahoo.com
Sender: Repeater-Builder@yahoogroups.com
Date: Tue, 03 Aug 2010 23:43:04
John, In it's former life it probably was a mobile telephone.
73 John VE3AMZ
- Original Message -
From: La Rue Communications
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, August 03, 2010 7:28 PM
Subject: [Repeater-Builder] Mastr II Mobile Repeater?
Gentlemen
RCC = Radio Common Carrier. The OLD mobile telephone service. Before IMTS
(Improved Mobile Telephone Service) and long before cell. BTW Perry Mason used
RCC
Bill N4XIR
--- In Repeater-Builder@yahoogroups.com, La Rue Communications
laruec...@... wrote:
Gentlemen (And Ladies)
I have a
Did you just buy the crystals and insert them in the ICOMs or did you send
them in to the crystal MFG to be compensated. If you did them yourself the
compensation is probably now messed up. The best way to fix it is to send
them in to the crystal MFG for compensation.
Stan
From:
Perry mason or Ironside?
kb0wlf
-Original Message-
From: bil.isom bil.i...@yahoo.com
Sent: Tuesday, August 03, 2010 7:25 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Mastr II Mobile Repeater?
RCC = Radio Common Carrier. The OLD mobile telephone service.
I am also looking for the same manual and have searched wide and far. Did this
thread have any success that could point me in the right direction or could
someone be so kind as to forward a copy?
svfdcook
KE5VJH
--- In Repeater-Builder@yahoogroups.com, Ken Arck ah...@... wrote:
At 01:40
Hi Stan,
Yes I sent the crystals to International. I have 3 fans running full time on
the heat sink.
Thanks for any help!
Steve
--- In Repeater-Builder@yahoogroups.com, Stanley Stanukinos ka5...@...
wrote:
Did you just buy the crystals and insert them in the ICOMs or did you send
them in
Next thing look at the comp voltage going to the tcxo it comes off of the
10v reg card. Have you checked or swapped it yet?
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of steve
Sent: Tuesday, August 03, 2010 8:06 PM
To:
Greg , That is the Same as LMR-400 Put that in the Calculator and Check I
did not see your Freq posted , Good advice use one piece Connectors
/splice Etc . will give a big loss depending on the Freq hope this helps
http://www.ocarc.ca/coax.htm
Godd Luck
PS Trees are great at
Thanks for the comments and suggestions. Here's a summary and some parting
thoughts.
Tom wrote:
For de-soldering I use a de-solder iron with a squeeze bulb on it from Radio
Shack, works great.
I've got one of those. In fact, it was the first tool I tried. It wouldn't melt
the solder on the
Most likely an old RCC mobile phone. Full duplex mobile, check for
multiple channel elements crystalled in the 454/459 area.
Milt
N3LTQ
Quoting La Rue Communications laruec...@gmail.com:
Gentlemen (And Ladies)
I have a MASTR II Exec mobile here, I think its a UHF Repeater. I
want to
I'm sure Harris in Lynchburg VA will have that combination breakdown.
They purchased MACOM, previously purchased Ericcson, GE, etc...
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of La Rue Communications
Sent: Tuesday, August 03, 2010 7:29 PM
To:
Ok, one last try. I need a UHF isolator and thought I would ask here again.
Brian, K5IN
At 03:33 PM 08/03/10, you wrote:
Hello all,
I have having a severe drift problem on my GE Mastr II 2 meter
repeater. The transmit freq will drift nearly 2 KHZ over a 5-10
minute period. I have changed exciters and used a different ICOM but
no improvement. The building that I am in is not
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