Anybody out there in radio land have schematics for
Trip-lite power supplies.
I have two PR 25A with different regulator boards. One works
the other doesn't.
Good ps 14vdc no load 13 vdc full load
Bad ps 15.8 vdc did not try a load yet.
Bad unit has an updated regulator board so I can't c
Yes, but we did it with B&W and early tube Colour TV's
- Original Message -
From: "skipp025"
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, August 26, 2010 10:11:35 AM
Subject: [Repeater-Builder] Re: DC Electrical Systems (AC & DC Tube Radios)
&
When I worked for Westinghouse Intl in the 60's, we
manufactured a special line of TV's, radios, and small
appliances for DC sections of the world. Our main office
was in New York City and we would get customers from
areas in NYC, SF and some other cities I can not remember
that only had 110VD
Try "Dans Small Parts and Kits.net"
All one word (no spaces)
He seems to have a lot of different trimmers listed.
Ralph,W7HSG
- Original Message -
From: "Joe"
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, August 24, 2010 8:11:22 AM
Subject: [Repeater-Builder] Spectrum Comms S
Anybody in the group know the correct length of the coax
for the Telewave TPRD 1556 duplexer. Need cavity interconnect
and combiner lengths. RG 142
Original frequency 155.5
New Frequency 146.8/146.2
Ralph, W7HSG
Filter looks like an old GE setup. If so the dummy load more than likely
is loaded with PCB and is tuned for about 70 mhz. Same would be
true for a RCA. Color of the load is what tips me off. Most of the older loads
were not wide bandwidth.
Ralph
- Original Message -
From: "Bill Isom"
I have good news and bad news
Good news. Found my manual for the HP 3551.
Bad news. The manual is at least several hundred pages with
about 30 very long 17" + pages of schematics.
Ralph
- Original Message -
From: "Ralph S. Turk"
To: Repeater-Builder@yahoogroups.com
I will try to remember tomorrow to look. If you don't hear from me in a day,
send me a email
Ralph
- Original Message -
From: petedcur...@gmail.com
To: "Repeater-Builder"
Sent: Saturday, August 7, 2010 8:18:27 AM
Subject: [Repeater-Builder] HP3551A Service manual
Hi,
I saw
I would NEVER put any electronics in the battery enclosure. All batteries are
known to vent some vapor. Even very little acid or basic vapor will ruin the
electronics
Been there, have the ruined controller to prove it.
Ralph, W7HSG
- Original Message -
From: "tahrens301" < tahrens @ s
Looking for more information on the "Control Head". I have several CXB's
without PA's.
I will be using a Micor PA with external circulator. Looking for information on
the feed back comming
from a MSF PA to the exciter.
Ralph
- Original Message -
From: "wb6dgn"
To: Repeater-Builder@
and Radio Shack (if you can find a store still stocking them).
--- Jeff WN3A
> -Original Message-
> From: Repeater-Builder@yahoogroups.com
> [mailto: Repeater-Builder@yahoogroups.com ] On Behalf Of Ralph S. Turk
> Sent: Tuesday, July 06, 2010 3:17 PM
> To: Repeater-B
Hi All
Looking for small etched, maybe drilled, small boards with layout for
several transistors, resistors etc all isolated pads
Also looking for ones that have layouts for 8pin, 14 pin or 16 pin dip with
isolated pads for hook up
I have some misc of the above and they are great for inverte
Hi All.
I used to use 3 1/8 and 1 5/8 copper transmission line in 20 ft lengths for
ground systems at
broadcast stations. Was very effective. Installed at a 2000ft tower which use
to have a lot of
damage due to lightning. We buried 40 lengths in a circle about 30 ft from the
tower ba
Hi all.
Built up a copy of the DC supply that was in a old Micor manual. Used the caps
and filter choke from an old
supply. Add a LM 317 with heat sink. Added MOV's and additional hf caps.
Seemed to work fine.
This fed a full micor repeater with all the normal modules. Worst case 9.6
In Montana on top of deep snow mountains, we used thermal-electric generators
run from
propane. Worked great and was very very safe.
Ralph, W7HSG
- Original Message -
From: "Nate Duehr"
To: Repeater-Builder@yahoogroups.com
Sent: Friday, February 19, 2010 7:50:13 AM GMT -07:00 U
Looking for advise on a HP 8924C
What Options needed for normal 2 way work.
Who knows who is selling these & reputations etc
Any help will be appreciated.
Thanks in advance
Ralph, W7HSG
Hi All
Does anyone have the schematic etc for a Circle M
TRN 5623 and the 5623A Wattmeter Panel
Looked in RB and did not see anything.
Ralph, W7HSG
I am building up a Micor repeater using a unified chassis
for use in Montana on a Mountain site. Site owner does not
want a micor power supply. He has station batteries and charger
system.
Does anyone have a regulator circuit to make the 9.6 vdc and audio 12 vdc
necessary for the unified chas
.com
Sent: Wednesday, June 17, 2009 5:04:36 PM GMT -07:00 U.S. Mountain Time
(Arizona)
Subject: Re: [Repeater-Builder] Noise on UHF
Isn't 2.4 GHz also shared with the federal government?
Chuck
WB2EDV
- Original Message -----
From: Ralph S. Turk
To: Repeater-Builder@
Hi All
Just be thankful that the Military is still using 420-450mhz. We share it and
if they
stop using it, Washington will sell it for something. We get a lot radar and
radio location
data every day and night. We live with it. Have been moving our links from 420
to 2.4GHz
ham band.
Ralph,
your zone first to establish how many channels are in the zone
then you can program frrqs for each zone.
Sent from my Verizon Wireless BlackBerry
>From : "Ralph S. Turk"
Date : Sat, 30 May 2009 15:11:05 + (UTC)
To :
Subject : [Repeater-Builder] Motorola CDM 1250
have to set your zone first to establish how many channels are in the zone
then you can program frrqs for each zone.
Sent from my Verizon Wireless BlackBerry
>From : "Ralph S. Turk"
Date : Sat, 30 May 2009 15:11:05 + (UTC)
To :
Subject : [Repeater-Builder] Motorola CDM 125
Good morning All
I have several CDM 1250's that need programing.
I received every thing with the CDM's.
Service manuals
Programing Software
Programing cable
Rib etc
The only thing I did not receive was the instructions for using the
software.
Software fires up fine and I have been able
I am in need of the pin out connections for the
RJ 45 to DB 25 cable used with a Motorola Rib
I have searched the RB site but can't seem to find
it.
Thanks in advance..
Ralph, W7HSG
Good morning All
The following is a new FCC web site for DTV
Follow instructions carefully. Wait for the
program to calculate info.
Seems to be one of the best. Confirms what
I know from working in the TV business for
30+ years. Last several installing DTV.
http://www.fcc.gov/mb/engi
er-Builder] Micor Repeater
Ralph S. Turk wrote:
Kevin
Unified Chassis meaning TX on top
Control Shelf and Rx etc on bottom.
Most chassis' were set-up this way, so please read on - and answer again.
A Unified Chassis is a chassis that is not made up of separate rack-mounted
Hi Kevin and all
Looks like I found the problems.
1. missing Jumper JU 955 Squelch Pot to Audio/Squelch Board
2. Broken wire on both the Squelch Pot low and Vol Hi.
3. Bad connection Pin 9 that connects to the audio/Squelch Board
Took the easy way out and ran a new wire.
Thanks for the suppor
I was out working in Tucson On New years... The
Roadrunners are Coolsame for the Humming Birds
Neal Ka2caf
--- On Sun, 2/15/09, Ralph S. Turk wrote:
From: Ralph S. Turk
Subject: Re: [Repeater-Builder] Micor Repeater
To: Repeater-Builder@yahoogroups.com
Date: Sunday, February 15, 2
Kevin
Unified Chassis meaning TX on top
Control Shelf and Rx etc on bottom.
I pulled the RX interface board and am tracing
Pin to pin. Found one jumper missing so far.
Ralph
- Original Message -
From: "Kevin Custer"
To: Repeater-Builder@yahoogroups.com
Sent: Monday, February 16,
Hi Kevin
This repeater I am working on is here in Tucson.
I will have additional data tomorrow. I will email it to
you. I need to make some more tests to understand what
I am missing.
Thanks
Ralph
- Original Message -
From: "Kevin Custer"
To: Repeater-Builder@yahoogroups.com
Sent
Hi Kevin
Yes I do. I built one micor repeater with no trouble last
summer. Worked like a charm. The only problem it is located in
Montana with my son, N7XVF where I can't get to it to make any measurements.
My next trip up there I will be leaving him a portable 7604 Tek scope and a
scope for
Hi all.
I am working on a Micor repeater (not Mobile) and I am having problems with the
Squelch and Audio circuits. Actual original usage of the Micor repeater is
unknown.
The repeater will have an external controller.
The only module used is the Station Control modified per repeater-build
Most sites will NOT allow RG214 to be used outside. Use 1/2 hard line for runs
less than 50-75 ft
- Original Message -
From: "Jeff DePolo"
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, February 5, 2009 6:31:22 AM GMT -07:00 U.S. Mountain Time
(Arizona)
Subject: RE: [Repeater-
e best solution.
--- In Repeater-Builder@yahoogroups.com , "Ralph S. Turk"
wrote:
>
> Hi Bob
> All duplexers have very poor out of band attenuation. The extra
cavity is to narrow the bandwidth.
> Cavity should have 2-3db of insertion loss (equates to sharp
slopes).
> P
teachable.
"Those that don't know, ask..."
--- In Repeater-Builder@yahoogroups.com , "Ralph S. Turk"
wrote:
>
> You would still need a pass cavity in front of the Preamp. Unless
the Helical is similar
> to the old Motorola vintage L, H or M receiv
You would still need a pass cavity in front of the Preamp. Unless the Helical
is similar
to the old Motorola vintage L, H or M receivers the cavity is still needed to
limit the bandwidth
going to the preamp. You might also need an attenuator after the preamp to
limit the gain.
Ralph
- Or
Hi all
Looking for manuals for
2.4Ghz Lynx-Cp2 Western Muiltplex model 27000-B1
For our group up in Montana. Any help at all would be
great.
Ralph W7HSG
Hi All.
I am working on several Micor repeaters for use in Montana linking
back to Tucson via the inter-net.
These are standard 75 watt complete Micor stations.
My problem is with the built in circulator that is feed by the PA
prior to the duplexer.
I have tuned the circulator using both a
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