And,...what kind of radio is he trying to use for this auxiliary
station ??
Ron
WW8RR
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Sean
Sent: Friday, June 03, 2005 12:04 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re:
As I was afraid of ..one of those wide band, receive everything from
DC to light radios. Those radios have very little immunity to heavy
local RF and are certainly not designed for operation in that type of
environment close to repeaters and other 2-way systems.
Ron
WW8RR
-Original
The 5 volt CAS signal from the TM-V7 can very easily be converted to an
8 volt (or even higher) level by using a VP0300L switching MOSFET and
pullup resistor of about 510 ohms to your 8 volt source.
If logic level conversion is required, then use the VN0300L or 2N7000
MOSFET. They are available
Mike:
Your problem with the Astron 35 will most likely be a bad solder joint
on the collector tab of one of the (4) 3771 transistors.
We keep reminding people that have problems with Astrons that this is
where to look because it is a VERY common failure mode with those
supplies and how they
Did you check the TX-RX web site ?
http://www.txrx.com/
If your model is not listed then drop them
an e-mail. They are usually quite responsive.
Ron
WW8RR
From: T.J.
[mailto:[EMAIL PROTECTED]
Sent: Thursday, April 14, 2005
11:18 AM
To: Builder Repeater
Nice web site and tool for attenuator calculations...
Just be sure to use only carbon composition resistors for RF
attenuators...no wire wound or spiral-wound precision
resistors.they become reactive at RF frequencies.
Ron Rogers
WW8RR
-Original Message-
From: Laryn Lohman
Title: RE: [Repeater-Builder] Hyper Terminal
Procomm or ProcommPlus is used pretty widely for packet TNC control and programming the ACC controller equipment.
Ron
WW8RR
-Original Message-
From: Don [mailto:[EMAIL PROTECTED]]
Sent: Saturday, March 19, 2005 12:21 PM
To:
The TP-38 only displays what tones are programmed to be enabled for
decoding. There is a keypad command to step through and display all
active tones that are enabled. Refer to the manual to validate your
programming
Ron Rogers
WW8RR
-Original Message-
From: skipp025 [mailto:[EMAIL
Title: Wanted to Buy or Trade
Looking to buy a functional VHF exciter module from a Uniden ARH-351 VHF repeater.
Or.I have a UHF exciter from a model ARU-251 willing to trade for the VHF exciter.
Please contact me directly off the list you can help me out.
Thanks.
Ron
WW8RR
[EMAIL
Title: Micor PA question
If it is the 150-162 version (TLD1693), it
will work OK but you will run out of tuning range on the 2 trimmer caps when
you try to tune it to the 146-148 range. You can solder 10 pf (2Kv) caps in parallel
to those 2 trimmer caps to optimize the tuning and
That's easyjust wind up about 25-30 feet of RG-174 coax and install
that between the 2 watt exciter and the Vocom Amp. That wound up coax
will give you about a 3 Db loss at 146 mhz and supply only 1 watt to the
amp instead of the 2 watts. Very simple and highly
reliable...nothing to
Barbour
WD8CHL
Rogers, Ron wrote:
That's easyjust wind up about 25-30 feet of RG-174 coax and
install
that between the 2 watt exciter and the Vocom Amp. That wound up coax
will give you about a 3 Db loss at 146 mhz and supply only 1 watt to
the
amp instead of the 2 watts. Very simple
What does the repeater output signal look like on a spectrum analyzer ??
That's the only way to tell if something is wrong with the transmit
signal.
It cannot simply be determined by what someone else observes on their
radio.
Ron
WW8RR
-Original Message-
From: w9mwq [mailto:[EMAIL
If this is for an Amateur Radio repeater,
then you need to start by researching the South Eastern Repeater Association and
contacting the appropriate frequency coordinator for your state. SERA is the organization
that coordinates Amateur repeaters for Kentucky.
www.sera.org
Title: RE: [Repeater-Builder] Touch lamps
I have always had great luck in eliminating the RFI element (turning them on and off from your RF) of touch lamps by installing 2.5 mH chokes in the touch sense lead of the lamp. Install the chokes as close as you can to the PC board or electronic
John's
correct..a low impedance output will usually drive a higher impedance input
withno problem...try it and see if it works,
Kevin.
The
reverse (high impedance output driving low impedance input) requires more
"engineering" .like a cheap audio transformer ?
Ron
WW8RR
Title: RE: [Repeater-Builder] Greenlee punch info
5/8
Ron
WW8RR
-Original Message-
From: johnmichaelwelton [mailto:[EMAIL PROTECTED]]
Sent: Monday, December 13, 2004 12:02 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Greenlee punch info
I want
I agree.let's get back to technical discussions now and away from
setting technically worthy criteria of someone posting a question on
the list
Ron
WW8RR
-Original Message-
From: Buley, Kenneth L (GE Consumer Industrial)
[mailto:[EMAIL PROTECTED]
Sent: Friday, December 03,
Dave:
I remember when this was a problem that seemed to surface years ago more
with fiberglass belted radial tires than with steel beltedand
also a problem with the older bias-ply tires.
One thing I heard many years ago from one mechanic that really seemed to
understand the problem was
I built the first micro-processor controlled repeater (what was believed to be)
in the state of Ohio back in 1973. It was the WR8AET 146.85 repeater and the
processor I used was the very first Intel microprocessor, the 4004 which was a
4 bit machine with 16 instructions !!
This repeater
Hey folks,
A 6264 is an 8K X 8 CMOS Static RAM..when you unplug it, it loses all data.
The 2864 is an 8K X 8 CMOS EEPROM...does not lose data when unplugged.
They are completely different
Ron Rogers
WW8RR
(previously WB8ERB)
-Original Message-
From: Bryon Jeffers
[mailto:[EMAIL PROTECTED]
Sent: Monday, August 30, 2004 1:00 PM
To: [EMAIL PROTECTED]; Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] RE: RC-96 EEPROM
On Mon, 30 Aug 2004 12:38:08 -0400, Rogers, Ron wrote:
A 6264 is an 8K X 8 CMOS Static RAM..when you unplug it, it loses all data
Then you need to look into Family Radio Service radios and options or GMRS
systems.
Ron Rogers
WW8RR
-Original Message-
From: Dakota Summerhawk [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 04, 2004 4:51 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Getting
Sounds like the classic Astron cold solder joint on one of the output
transistors problem. Many an Astron has suffered from this... or maybe
only able to supply about 5 amps (50 amp supply) before it crashes.
Be sure to check the buss wires connecting all 8 of the collectors of the
output
Lots of parts houses carry the good old Intel 8085 and 80C85 workhorses.
Check Digikey, JDR Micro Devices, Mouser, etc.
Ron
WW8RR
-Original Message-
From: randy kisthardt [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 02, 2004 10:07 PM
To: Repeater-Builder@yahoogroups.com
Subject:
Remind the fellow using 100 watts to talk to a repeater that he could be in
violation of Part 97 rules on using minimal power.
We had a similar situation and interference to our one 2 meter repeater on
the mountain and we had to remind the guy of the Laws of Radio Physics,
power, distance, and
Describe the interferencevoice, digital, video, dead carrier, etc ??
Ron Rogers
-WW8RR-
-Original Message-
From: Dave Karr [mailto:[EMAIL PROTECTED]
Sent: Monday, April 26, 2004 11:32 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Help needed finding sources
I wouldn't touch it either. Reducing the TX power is probably the best thing
at this time. However, read on
If you recently rebuilt the final amp stage and changed components, chances
are you have slightly changed the characteristic impedance of the amp output
and this is affecting the
Yep
folks, theseare commonly referred to as "Phasing Harnesses" just like we
use in the contest circles to stack multiple antennas and phase them so the feed
point impedance still "sees" 50 ohms at the design
frequency.
Ron Rogers-WB8ERB-
-Original Message-From: Steve Grantham
He stated it was conventional tone PL equipped, and not Digital PL equipped.
Ron
-WB8ERB-
-Original Message-
From: Bob [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 13, 2004 12:46 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Infomation Needed
What is a
Here, let me just bend over and show you a REAL Radio Active Chemtrail !!!
And I won't even charge a couple of bucks for the demonstration !!
(And the sad part about this type of internet hype is that these people are
usually allowed to multiply and vote !!)
Ron
-WB8ERB-
-Original
I would start checking in 2 areas
1) RF getting into the audio chain or other power/control leads somewhere.
Think about adding Ferrite mufflers (made from #43 ferrite) to any audio
cables. Place the Ferrite near connectors on both ends. Make sure the power
supply and control line leads are
Why do you need to know the multiplier to order the xtals ??
Simply call Sentry Crystal and tell them the model number of the Phoenix and
your desired TX and RX frequencies.
I've ordered dozens of xtals from Sentry for my Phoenix and Century II VHF
and UHF radios from Sentryalways good
Yep, there is a difference of legality depending upon the service they are
being used in
Ron Rogers
-WB8ERB-
-Original Message-
From: Johnny [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 11:23 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder]
Sounds like an exciter problem or duplexer/cavity filter tuning drift
problem, not an amplifier problem. (Assuming you are using a duplexer in the
repeater)
Have you checked the input power to the amp from the exciter device ??
How are you measuring the output power in relation to the antenna
-
From: Tedd Doda [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 08, 2004 6:22 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Fiberglass rod
On Wed, 7 Jan 2004 12:04:20 -0500, Rogers, Ron wrote:
McMaster-Carr carries all sorts of Fiberglass rod material in various
You might also check your local car audio shops. They carry some pretty
Beefy screw together inline cartridge fuse holders and fuses for these 800
watt and higher car audio systems. Some of these holders are made to
accommodate that # 2 welding cable that the kids use to run power back to
the rear
The latest re-write of the FCC Part 97 rules do not dictate that you have
to add ANY /R, /L, or / anything to repeater or link transmitter
callsigns. Just a plain callsign is fine and less than 20 WPM if using CW
ID's ( Tone modulated FM in FM repeaters).
Ron
-WB8ERB-
-Original
McMaster-Carr carries all sorts of Fiberglass rod material in various sizes.
An example is a 60 length of 1/4 rod for $2.25. Check out part no. 8543K59
on the McMaster Carr website if you are interested.
http://www.mcmaster.com/
Tuning trimmers and waxed slugs in older equipment or cold WX
Does anyone know if there is a web site for TPL amps ?
Ron Rogers
-WB8ERB-
Yahoo! Groups Links
To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
Your use of Yahoo! Groups is
Yep, that's why I responded the way I did about MFJ amps..
Ron
-WB8ERB-
-Original Message-
From: Mike Perryman [mailto:[EMAIL PROTECTED]
Sent: Tuesday, December 16, 2003 2:30 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] TPL website ??
I think maybe
Start off by getting rid of the LMR-400 feedline !!
Do not use braid over tin foil feedline for repeater duplex operation.
Internal chaffing of braid and tin foil with any feedline movement during
transmit will kill your repeater.
To confirm the problem IS with the feedline swap it out with a
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