RE: [Repeater-Builder] Micro computer concepts rc100 and echolink

2008-12-08 Thread Mung Bungholio
I did it to an RC1000 but I did it a little different than most.  My audio
going from echolink and the receiver go into an audio mixer before going to
the transmitter.

 

Vern

KI4ONW.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Aaron Sloan
Sent: Monday, December 08, 2008 11:25 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Micro computer concepts rc100 and echolink

 

Hello group,

Has anyone on the list gone down the path of interfacing echolink into a 
rc100 repeater controller?
It doesn't look too difficult but if I don't have to reinvent the wheel

Thanks,
Aaron ka0zoz

 



[Repeater-Builder] Duplexers

2008-10-27 Thread Mung Bungholio
Is it OK to get some kind of storage container or something like that and
put my duplexer outside?  What would be the risks of doing so?  I am in
Florida so lots of rain and heat but no freezing months or anything like
that?

 

Thanks,

Vern

KI4ONW



RE: [Repeater-Builder] Duplexers

2008-10-27 Thread Mung Bungholio
The repeater is at my house so it's fairly safe as far as theft goes.  It's
a DB 2m 6 can duplexer in a metal case.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of David Piche
Sent: Monday, October 27, 2008 9:24 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Duplexers

 


I would think that at the least you would want to build a small building,
even something close to a large dog house, 3'D X 4'W x 4'H.  Leaves at least
a little room to breath and work around, heat may be a factor depending on
the cans you use and may send them a bit out of tune from the hot/humid
summer months to the cooler less humid winter ones. Maybe a hinged lid for
ease of access and a padlock.  Worked a several sites I have seen but just a
small box, that may be too easy to blow around, steal, no room to work, but
depends on where you are putting it as it is all relative.

--- On Mon, 10/27/08, Mung Bungholio [EMAIL PROTECTED] wrote:

From: Mung Bungholio [EMAIL PROTECTED]
Subject: [Repeater-Builder] Duplexers
To: Repeater-Builder@yahoogroups.com
Date: Monday, October 27, 2008, 9:14 AM

Is it OK to get some kind of storage container or something like that and
put my duplexer outside?  What would be the risks of doing so?  I am in
Florida so lots of rain and heat but no freezing months or anything like
that?

 

Thanks,

Vern

KI4ONW

 

 



RE: [Repeater-Builder] Duplexers

2008-10-27 Thread Mung Bungholio
That is what I was thinking of too.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Scott Zimmerman
Sent: Monday, October 27, 2008 10:59 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Duplexers

 

I often thought about using a Rubbermaid product.

 

Here is a deck box:

Rubbermaid item #3743

 

or a vertical storage cabinet:

Rubbermaid item #3749

 

I'm not saying these would be 100% waterproof, but I think they would work
well enough.

 

I think the last price I saw on the storage cabinet at wally-world was
around $100 or so.

 

Scott

 

Scott Zimmerman
Amateur Radio Call N3XCC
474 Barnett Rd
Boswell, PA 15531

- Original Message - 

From: Mung Bungholio mailto:[EMAIL PROTECTED]  

To: Repeater-Builder@yahoogroups.com 

Sent: Monday, October 27, 2008 10:40 AM

Subject: RE: [Repeater-Builder] Duplexers

 

The repeater is at my house so it's fairly safe as far as theft goes.  It's
a DB 2m 6 can duplexer in a metal case.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of David Piche
Sent: Monday, October 27, 2008 9:24 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Duplexers

 


I would think that at the least you would want to build a small building,
even something close to a large dog house, 3'D X 4'W x 4'H.  Leaves at least
a little room to breath and work around, heat may be a factor depending on
the cans you use and may send them a bit out of tune from the hot/humid
summer months to the cooler less humid winter ones. Maybe a hinged lid for
ease of access and a padlock.  Worked a several sites I have seen but just a
small box, that may be too easy to blow around, steal, no room to work, but
depends on where you are putting it as it is all relative.

--- On Mon, 10/27/08, Mung Bungholio [EMAIL PROTECTED] wrote:

From: Mung Bungholio [EMAIL PROTECTED]
Subject: [Repeater-Builder] Duplexers
To: Repeater-Builder@yahoogroups.com
Date: Monday, October 27, 2008, 9:14 AM

Is it OK to get some kind of storage container or something like that and
put my duplexer outside?  What would be the risks of doing so?  I am in
Florida so lots of rain and heat but no freezing months or anything like
that?

 

Thanks,

Vern

KI4ONW

 

  _  


No virus found in this incoming message.
Checked by AVG - http://www.avg.com 
Version: 8.0.175 / Virus Database: 270.8.4/1749 - Release Date: 10/27/2008
7:57 AM

 



RE: [Repeater-Builder] Duplexers

2008-10-27 Thread Mung Bungholio
That deck box would work.  If I laid it down.  I actually have a nice
storage cabinet in my shed that if I put the stuff in it onto shelves I
could have room for the duplexer and some other storage above it.  Shelves
are probably cheaper than the cabinet.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Scott Zimmerman
Sent: Monday, October 27, 2008 10:59 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Duplexers

 

I often thought about using a Rubbermaid product.

 

Here is a deck box:

Rubbermaid item #3743

 

or a vertical storage cabinet:

Rubbermaid item #3749

 

I'm not saying these would be 100% waterproof, but I think they would work
well enough.

 

I think the last price I saw on the storage cabinet at wally-world was
around $100 or so.

 

Scott

 

Scott Zimmerman
Amateur Radio Call N3XCC
474 Barnett Rd
Boswell, PA 15531

- Original Message - 

From: Mung Bungholio mailto:[EMAIL PROTECTED]  

To: Repeater-Builder@yahoogroups.com 

Sent: Monday, October 27, 2008 10:40 AM

Subject: RE: [Repeater-Builder] Duplexers

 

The repeater is at my house so it's fairly safe as far as theft goes.  It's
a DB 2m 6 can duplexer in a metal case.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of David Piche
Sent: Monday, October 27, 2008 9:24 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Duplexers

 


I would think that at the least you would want to build a small building,
even something close to a large dog house, 3'D X 4'W x 4'H.  Leaves at least
a little room to breath and work around, heat may be a factor depending on
the cans you use and may send them a bit out of tune from the hot/humid
summer months to the cooler less humid winter ones. Maybe a hinged lid for
ease of access and a padlock.  Worked a several sites I have seen but just a
small box, that may be too easy to blow around, steal, no room to work, but
depends on where you are putting it as it is all relative.

--- On Mon, 10/27/08, Mung Bungholio [EMAIL PROTECTED] wrote:

From: Mung Bungholio [EMAIL PROTECTED]
Subject: [Repeater-Builder] Duplexers
To: Repeater-Builder@yahoogroups.com
Date: Monday, October 27, 2008, 9:14 AM

Is it OK to get some kind of storage container or something like that and
put my duplexer outside?  What would be the risks of doing so?  I am in
Florida so lots of rain and heat but no freezing months or anything like
that?

 

Thanks,

Vern

KI4ONW

 

  _  


No virus found in this incoming message.
Checked by AVG - http://www.avg.com 
Version: 8.0.175 / Virus Database: 270.8.4/1749 - Release Date: 10/27/2008
7:57 AM

 



RE: [Repeater-Builder] Back up......

2008-08-16 Thread Mung Bungholio
I have setup a forum for repeater builders.  This is not meant as a
replacement of this group but as an enhancement and a way to have discussion
threads without having to have everyone on the list get a 1000 emails about
stuff they don't care about.  If anyone wants any new forum groups started
let me know.

 

http://sun2.highwayusa.com/repeaterforum/phpBB3/

 

Thanks,

Vern

KI4ONW



RE: [Repeater-Builder] RadioShack Recalls Power Supplies Due to Electrocution and Fire Hazards

2008-07-04 Thread Mung Bungholio
I have one so we will see what they do when I bring it back in.  It hasn't
burst into flames yet.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mark Thompson
Sent: Friday, July 04, 2008 12:48 AM
To: Repeater-Builder@yahoogroups.com; [EMAIL PROTECTED];
[EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: [Repeater-Builder] RadioShack Recalls Power Supplies Due to
Electrocution and Fire Hazards

 



U.S. Consumer Product Safety Commission
Office of Information and Public Affairs
Washington, DC 20207

FOR IMMEDIATE RELEASE
July 2, 2008
Release #08-319

Firm's Recall Hotline: (800) 843-7422
CPSC Recall Hotline: (800) 638-2772
CPSC Media Contact: (301) 504-7908

RadioShack Recalls Power Supplies Due to Electrocution and Fire Hazards

WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission, in 
cooperation with the firm named below, today announced a voluntary recall 
of the following consumer product. Consumers should stop using recalled
products 
immediately unless otherwise instructed.

Name of Product:  13.8V DC Power Supplies

Units:  About 160,000

Importer:  RadioShack Corp., of Fort Worth, Texas

Hazard:  The recalled power supplies are wired incorrectly, posing 
   electrocution and fire hazards.

Incidents/Injuries:  None reported.

Description:  The recall involves RadioShack 13.8V DC Power Supplies, 
catalog numbers 22-507 and 22-508 with date codes from 
  08A04 through 01A08. 

Date code format is MMAYY where MM is the month and YY is the year. The 
catalog number and date code are located on the back of the power supply. 
Power Supplies with a green dot on the product and the product's packaging 
have already been repaired and are not included in the recall.

Sold at:  RadioShack stores nationwide from October 2004 through January 
2008 for between $50 and $85.

Manufactured in: China

Remedy:  Consumers should unplug the recalled power supply immediately and
take it to 
any RadioShack store for a free repair. Registered owners of the recalled
power supplies 
will be mailed a notice.

Consumer Contact:  For additional information, contact RadioShack at
800-843-7422 anytime, 
or visit the firm's website at:

 http://www.radioshack.com/recall 

To see this recall on CPSC's web site, including pictures of the recalled
products, please go to:

 http://www.cpsc.gov/cpscpub/prerel/prhtm108/08319.html 

 



RE: [Repeater-Builder] Re: GE Delta

2008-05-28 Thread Mung Bungholio
Thanks.  Yes it is a high split.   N3DD3N110TB.  The freqs on the label
inside are all in the 47 mhz range.

 

Vern

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of ka9gpx
Sent: Tuesday, May 27, 2008 9:03 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: GE Delta

 

 
 So now what. I would love to be able to slide this thing into 6m and 
 use it for something.
 
 How does one go about programming one of these puppies? I have seen a 
 lot of different things out on the net but nothing that seems to say 
 the easy way to get it programmed. 

Hello Vern,
If you have the 2212 chip (as opposed to the xtal vers...) there are
several ways to attack the programming issues... None of which is too
EASY but not too difficult either...Simplest is to find a GE dealer
in you area that might have the capabilities to do thatnext would
be to purchase any of the programmers made for doing the XR2212 Chip.
This chip was also used in the GE Phoenix Series of radios so any
programmer for that line should also work...) There are several
available, such as the one from RF GUYS,...There's also one available
from the NHRC group,. and if you don't mind building your own, you
might try the KG4LNE software and programmer, or the KA9FUR software
and programmer. ( just Google those sites)..sorry don't have the
links handy. There are also what's known as Downloading Type Control
heads available which will download freq  tone info to the radio
every time it's turned on but they too require special (tough to find
) soft/hard-ware...

 
 Will it slide into 6m by just programming it or does it need to be 
 modded as well?

I've put 2 deltas on 6mtrsI may have gotten lucky, but both
Moved just fine...No special mods required...They will however need
to have the VCO's reset, as well as the Recv. Front-end cavities
re-aligned. Also, I cut the power back to 45W for my piece of mind...

One Caveat...Are you sure you have a high-end split The Deltas
came in 3 ranges for the Low band model29-36, 36-42, 42-50, One
way to tell is by the Combination number on the radio (if it's still
attached)...If you have a high range version, the combo number
should look something like...N3DD3N060TB...or N3DD3N110TB... The
Key is the 3rd letter...in this case the D(42-50Mhz)...a low end
vers.(29-36Mhz)would have a B in place of the D...a mid range
(36-42Mhz) would have a C in the 3rd positionPower is indicated
by the 060-60Watt  110-110Watt

Try the KA9FUR web site for some interfacing ideas (without control
head...also Buck's Packetradio.com web site...He has some
information there about using the Deltas for Packet,..but this will
Guide you towards a Non-Control Head set-up..

Good Luck,... Hope this helps...Hope I didn't use up this month's
Text-Limit with this answer...
73- Carl
KA9GPX

 



 



RE: [Repeater-Builder] Re: GE Delta

2008-05-28 Thread Mung Bungholio
Cool.  Thanks!  This is very helpful .  Mine is for sure a synthesized
Delta.  I have to order my programmer as well.  They do have some just not
listed on Ebay right now.

 

Vern

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jim Brown
Sent: Tuesday, May 27, 2008 11:04 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: GE Delta

 


I operate all my Rangr's without a control head, and also have a crystal
controlled Delta operating packet on a montaintop without a control head.
You just have to scope out the pins and apply voltage to the ign +12 and the
main +12 to fire them up.  Be careful putting a speaker on the Delta, as it
uses a floating speaker connection.  Do not hook either side of the speaker
to ground.

I am attaching my mod to run the Delta without a control head.  I jumper to
a 25 pin D connector to get compatable with common connectors.  The two
large pins are the high current + and - for the final amp.  The Rangr
connector is the same as a synthesized Delta, while the older crystal
controlled Deltas use the Delta configuration I show here.  I am also
including the diagram of the connector I plagerized from a packet mod for
the Rangr.  It is a good description of the layout of the interface
connector.

73 - Jim  W5ZIT

mung_bungholio [EMAIL PROTECTED] wrote:

Cool. I will check to see if it has the chip. They don't have any 
programmers listed right now. I will ask them if they have any not 
listed.

How about testing this thing out without a control head? I have a 
service monitor so I just need to know how to power it up and listen 
to the speaker and make it tx so that I can see what it is putting 
out?

Thanks,
Vern

--- In Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com , Jim Brown [EMAIL PROTECTED] 
wrote:

 If the unit you are looking at is a programmable type, you can 
program with the RFGuys programmer by removing the chip and plugging 
it into their programmer board which plugs into the parallel port of 
your computer. You have to use DOS to generate the personality (a 
256 byte binary file) to move to the chip. They supply a program to 
generate the personality.
 
 I use one of these programmers to generate personalities for GE 
Rangr and GE Phoenix radios. I don't have any programmable Deltas. 
Some folks have indicated problems getting their computer to work 
with this programmer, but I use an IBM 390 laptop and it works fine.
 
 Be aware that there were lots of crystal controlled Deltas made 
also. You will have to order crystals for those types. To verify 
that your radio is programmable you will find an XR2212 EEPROM near 
the microprocessor in a socket. This is the chip you remove and plug 
into the RFGuys programmer.
 
 RFGuys markets their unit on Ebay.
 
 73 - Jim W5ZIT
 
 mung_bungholio [EMAIL PROTECTED] wrote: Well I 
was over at the junk store looking for UHF commercial radios for 
 the GMRS project and didn't find anything for that but did find 
the 
 drawer unit for a low band GE Delta for $5.00.
 
 So now what. I would love to be able to slide this thing into 6m 
and 
 use it for something.
 
 How does one go about programming one of these puppies? I have 
seen a 
 lot of different things out on the net but nothing that seems to 
say 
 the easy way to get it programmed. 
 
 Will it slide into 6m by just programming it or does it need to be 
 modded as well?
 
 I know another project but that is how these things happen. Go 
looking 
 for one thing and find something else to play with.
 
 Thanks,
 Vern
 KI4ONW

 

  

 



RE: [Repeater-Builder] Re: GMRS Radios

2008-05-28 Thread Mung Bungholio
On GMRS they have another function.  You can give the family a blister pack
radio and they can use it on the repeater.  It's not perfect but it is a way
to get people to learn more about radio.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Dave Gomberg
Sent: Wednesday, May 28, 2008 7:01 PM
To: Repeater-Builder@yahoogroups.com; Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: GMRS Radios

 

At 07:44 5/28/2008, Ron Wright wrote:

Simplex repeaters have their use such as for announcments.  As for regular
radio-to-radio comm it sucks 


I think simplex repeaters have two obvious applications:

1.   When no pairs are available they are an option on simplex frequencies
2.  In the event a disaster takes out a repeater, they represent a way to
retain function.
You can put up a simplex repeater on the output frequency of the repeater,
with an id that explains what is going on, and invites traffic.





-- 
Dave Gomberg, San Francisco   NE5EE gomberg1 at wcf dot com
All addresses, phones, etc. at http://www.wcf.com/ham/info.html
- 

 



RE: [Repeater-Builder] Re: GMRS Radios

2008-05-27 Thread Mung Bungholio
Are you sure about that?  They were actually selling them at one point.  I
think Radio Shack had one.  

 

I would like to see where it says you can't do it.  I will read again but I
didn't see it written anywhere.  

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of sgreact47
Sent: Tuesday, May 27, 2008 6:48 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: GMRS Radios

 

mung_bungholio [EMAIL PROTECTED] wrote:

 I am thinking about doing a store and forward repeater for GMRS. 

store and forward repeater(s) are forbidden on GMRS.

ALL repeaters and base stations must meet .002% frequency tolerance.
They also must meet the later transmitter audio filtering .

Small base stations, 5watts or less, and mobiles must meet the .005%
tolerance.

 



RE: [Repeater-Builder] Re: GMRS Radios

2008-05-27 Thread Mung Bungholio
First of all I know we are not supposed to talk about part 97 rules on here
but these are part 95 so that should be OK right J

 

Anyway.  I wonder if you are talking about store and forward being forbidden
on FRS?  That is true.

 

Here is some reading material about store and forward on GMRS.

 

A conventional base station can also be set up as a repeater by receiving a
signal in the

462 MHz band, and then retransmitting that same signal after a slight delay
on the same

frequency. This requires attaching an inexpensive store-and- forward
device to the base

station, but also requires using another device to shut the station off if
it is operated from

a remote location.

 

Source http://www.wirelessgalaxy.com/twradios/Material/What_is_GMRS.pdf

 

OK I have looked and looked.  Lots of people doing simplex repeaters or
store and forward on GMRS

 

http://frwebgate1.access.gpo.gov/cgi-bin/waisgate.cgi?WAISdocID=934430266220
+1+0+0
http://frwebgate1.access.gpo.gov/cgi-bin/waisgate.cgi?WAISdocID=93443026622
0+1+0+0WAISaction=retrieve WAISaction=retrieve

 

Here is the part 95 rules and nothing in there about not doing it on GMRS.

 

So if it is against the rules please someone show me where.

 

Thanks,

Vern

KI4ONW

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of sgreact47
Sent: Tuesday, May 27, 2008 6:48 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: GMRS Radios

 

mung_bungholio [EMAIL PROTECTED] wrote:

 I am thinking about doing a store and forward repeater for GMRS. 

store and forward repeater(s) are forbidden on GMRS.

ALL repeaters and base stations must meet .002% frequency tolerance.
They also must meet the later transmitter audio filtering .

Small base stations, 5watts or less, and mobiles must meet the .005%
tolerance.

 



RE: [Repeater-Builder] Re: GMRS Radios

2008-05-27 Thread Mung Bungholio
I am not questioning the frequency tolerance rules.  However a question
there does come up.  Is a mobile that is hooked up to my 75' tower a mobile
or a base station?  I can still move the radio any time I want.

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Richard
Sent: Tuesday, May 27, 2008 10:11 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: GMRS Radios

 

I sent this before I was finished. The part about the frequency tolerance is
true, but I don't know about store-and-forward.

 

Richard

 http://www.n7tgb.net/ www.n7tgb.net

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Richard
Sent: Tuesday, May 27, 2008 7:05 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: GMRS Radios

It is true, and it is in the FCC rules.

 

Richard

 http://www.n7tgb.net/ www.n7tgb.net

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mung Bungholio
Sent: Tuesday, May 27, 2008 4:17 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: GMRS Radios

Are you sure about that?  They were actually selling them at one point.  I
think Radio Shack had one.  

I would like to see where it says you can't do it.  I will read again but I
didn't see it written anywhere.  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of sgreact47
Sent: Tuesday, May 27, 2008 6:48 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: GMRS Radios

mung_bungholio [EMAIL PROTECTED] wrote:

 I am thinking about doing a store and forward repeater for GMRS. 

store and forward repeater(s) are forbidden on GMRS.

ALL repeaters and base stations must meet .002% frequency tolerance.
They also must meet the later transmitter audio filtering .

Small base stations, 5watts or less, and mobiles must meet the .005%
tolerance.

 



RE: Old tubes (was Re: [Repeater-Builder] Re: mice and the trusty old GE Master Pro)

2008-05-24 Thread Mung Bungholio
They don't age by sitting on the shelf.  They work just fine after sitting
there.  One of my other hobbies is Hammond Organs and I have plenty of
vintage tubes that are still going strong.  Doesn't matter if you use them
and then leave them sit for a while either.

 

Now capacitors that is a whole different ball game.

 

Vern

KI4ONW

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Saturday, May 24, 2008 7:24 PM
To: Repeater-Builder@yahoogroups.com
Subject: Old tubes (was Re: [Repeater-Builder] Re: mice and the trusty old
GE Master Pro)

 

At 5/24/2008 09:51, you wrote:

Don't tubes age just sitting on a shelf? What year were they made?

I didn't think so. At least 3 of the 1930/1940's vintage TVs on display at 
the Early TV Museum in Hilliard, OH work (I turned them on). I'd think 
today one would have a hard time finding replacement picture tubes for them.

BTW, I highly recommend the above as an additional activity before or after 
Dayton. Normally they're only open on the weekends, but if enough of us 
want to visit during the week (say, the Thursday before Dayton), I think 
they'll open for us.

Bob NO6B

 



RE: [Repeater-Builder] Re: Best coax for short jumpers in repeater cabinet?

2008-05-09 Thread Mung Bungholio
Get rid of the LMR400 and replace it with some kind of hardline.

 

Vern

KI4ONW

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of jstechnicalservice
Sent: Thursday, May 08, 2008 9:08 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Best coax for short jumpers in repeater
cabinet?

 


Thanks, Ron
Here is more information on what we have. The HAAT is 122ft., we 
currently have a Maxrad MFB-1503 3db antenna and LMR400 coax. We are 
using a ST2 Midland at 110W and there is some type of older pre-amp 
installed with no tag, but has 6db hand written on it. Any 
suggestions for improvement will be appreciated but we do have a 
limited budget, especially with the impending rebanding. We want the 
high-band repeater in place for backup when this happens and also as 
our primary for the time being. 

 Jeff,
 
 To really give advice here what HAAT is your antenna. At 100 ft 
AGL 14 miles is about the expected range. Still depends on your 
terrain.
 
 As for feedline I think the LMR400 is a double shielded coax with 2 
different shield materials. It has been found these generate noise 
on the tx side from the high RF. This would affect rcv. Probably 
good for rcv, but my standard is have nothing in a repeater that 
causes problems.
 
 I use either RG214 double shielded RG8 size and also 1/4 heliax. 
Both give good shielding and with short pieces little loss. Also 
RG142 which is a double shielded RG58 size cable often silver 
shield. Motorola and others use this inside their equipment.
 
 Never use double shielded cable with the 2 shields of different 
material like 9913 or some of the LMR stuff. Again the tx high RF 
will generate noise.
 
 73, ron, n9ee/r
 
 
 
 
 
 
 From: jstechnicalservice [EMAIL PROTECTED]
 Date: 2008/05/08 Thu PM 12:30:30 CDT
 To: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com 
 Subject: [Repeater-Builder] Best coax for short jumpers in 
repeater cabinet?
 
  
 I was hoping to get some opinions on the best coax to make jumpers 
for 
 internal connections on a 152 Mhz public safety repeater. I'm 
currently 
 using LMR400 and we can hit the repeater consistantly with a 5 
watt 
 handheld at 14 miles. The problem is we sometimes need around 15 
to 16. 
 I was hoping to improve performance as much as possible. Thanks
 
 Jeff Skaggs
 Concord-Greene FD
 
  

 
 
 Ron Wright, N9EE
 727-376-6575
 MICRO COMPUTER CONCEPTS
 Owner 146.64 repeater Tampa Bay, FL
 No tone, all are welcome.