Hi All
On my duplexer The High port seems to be faulty.
I have an additional antenna so I was thinking to use the LOW port of
the duplexer with the existing antenna (because on the same tower a TV
station is having its TX antennas: output power 250W, Police repeaters,
Civil emergency repeaters
--- In Repeater-Builder@yahoogroups.com, w4wsm [EMAIL PROTECTED] wrote:
hello
most likely something on the audio board..there is a control on the
board,that if you turn to high ,it will unsq and key xmiter..
wd4egd
If the 10volt board is fine can it still be any of these? I've
swapped
ALL
I'm suspecting the ferro cap after looking at it. It seems to have some oily
residue on the top of the can so maybe it has been leaking. I'm unable to
check capacitance but I did pull the leads of and check with my DMM on ohm
range and its not shorted. It will start to charge up on the
I'm suspecting the ferro cap after looking at it.
Seems to me last time I ordered one I got it from either Newark or Allied.
It might have been classified under motor-start capacitors or the like. I
believe I was able to cross-ref the part number off the failed unit and get
an exact
Jeff and Repeater-Builders
I have found a ready source of these caps to be at my local refrigeration
supply. They have a very good assortment of motor start or motor run
capacitors and they are AC not DC. Tom Manning, AF4UG
- Original Message -
From: Jeff DePolo
To:
This question has probably been answered before but here goes
I am looking for a small,simple but reliable cor\cos switch circuit
so that I can take a high cor\cos signal and convert it to a low.
I am doing a project in which the most reliable cor\cos is
at 5 volts but the PTT goes to ground,
And... who seems to have manuals for everything..? second of
course only to MDM Ted.
Jack,
Do you want the manual on the radio side remote or the user side
remote? I already have the radio side remote paperwork scanned
into pdf.
skipp
jack_kr9q [EMAIL PROTECTED] wrote:
Hello to the
Re: Caps in resonant supplies
Hello Sailors,
Don't remember if I posted this already. If you replace the
cap in a resonant layout supply... be sure to replace it with
the original value.
If you use a larger or different value the end results in some
layouts can be quite the large bang...
Re: COR\COS switch
I can probably do that circuit up for you using one or two vn10
(aka 2n7000) type fets. If no one pops up with an easier circuit
just let me/us know and I'll throw one out.
Sometimes it's betta' to work with bipolar transistors which tend
to be easier to control
I found a 7uf 660vac from Allied part no #591-7040 will that work?
-Original message-
From: Jeff DePolo [EMAIL PROTECTED]
Date: Fri, 09 Feb 2007 16:18:00 -0800
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Spam] RE: [Repeater-Builder] Mastr II Station Power Supply
Problem?
I'm
Does anyone know what the GaSA transistor is and have a source for the
replacement.
Thanks
Wayne
Wayne, They will Know http://www.advancedreceiver.com/index1.html I
sent one in it was Fixed Very Fast, Tuned to My Repeater for less then
half price of a new one .
Good Luck
Don KA9QJG
Seems like ARR sells them for around $15 each. sb
Has anyone else looked at the input return loss on their ARR preamp? I had
one that, when put in place, was throwing off the tuning of a two-cavity
bandpass filter I had ahead of it. I swept it and found the return loss to
only be about 5 dB. I put an Angle Linear preamp in its place and all
Gentlemen,
It has my experince that pretty much all* the manufacturers of equipment in
our field are very helpful. All it takes usually is a phone call or email and
you can get all kinds of info.
*now, a certain 'bat wing' company may be the exception if you don't have an
account
Hi Jeff,
Then, last week, a friend brought over his 440 duplexer (Wacom 678) and
asked me to tune it on the network analyzer as it had been victimized by the
golden screwdriver.
For those who are inquiring minds and not up to all of the terminology, what
is a golden screwdriver?
Don, KD9PT
For those who are inquiring minds and not up to all of the
terminology, what
is a golden screwdriver?
Using the golden screwdriver means somebody went and diddled with
something that they shouldn't have diddled with, and probably did so without
using any test equipment.
I don't know where
At 01:32 PM 2/9/2007, you wrote:
Has anyone else looked at the input return loss on their ARR preamp? I had
one that, when put in place, was throwing off the tuning of a two-cavity
bandpass filter I had ahead of it. I swept it and found the return loss to
only be about 5 dB. I put an Angle
Don if you were ever in CB ,We had a Golden screwdriver But after
upgrading to Ham Radio We got platinum screw Drivers Ha Ha
It is basically a Term that was Used when a Person would Peak and Tweak the
Radios, An example trying to get 2 more Watts that would not make a
difference anyway,
Don Kupferschmidt wrote:
Hi Jeff,
Then, last week, a friend brought over his 440 duplexer (Wacom 678) and
asked me to tune it on the network analyzer as it had been victimized by
the
golden screwdriver.
For those who are inquiring minds and not up to all of the terminology,
what
On 2/9/07, Don Kupferschmidt [EMAIL PROTECTED] wrote:
For those who are inquiring minds and not up to all of the terminology, what
is a golden screwdriver?
The golden screwdriver is either:
1. The device used by a novice/idiot to screw something up.
2. Sometimes also used as a reference to an
For those who are inquiring minds and not up to all
of the terminology, what is a golden screwdriver?
Simple: You realized someone before you has already touched
the radio/circuit you're working on.
Definitions from The Online Plain Text English Dictionary:
Golden Screwdriver
(v.)
Hey Jeff,
I have a very dear friend who cannot keep from 'improving' on alignment.
This started with the old railroad T43GGV up to the Regency RH250B, and an
Atlas 210. I gave this fellow the RH250B, tuned and programmed for the
local 2M FM repeaters and put a stick on seal on the case -
---I swear by my last breath that I will *never* use anything other
than Chip's stuff - there is simply *nothing* on the planet that
comes close. I've been using his preamps and multicouplers for close
to 20 years now and have *never* been disappointed (nor have I ever
been disappointed
or
large amounts of wiring bundled with jap-wrap (cheap vinyl electrical
tape)
Hey, thanks, I learned a new term today! That one will come in handy!
--- Jeff
At 03:11 PM 2/9/2007, you wrote:
About a month ago I decomissioned a 220 ACSSB LTR system, including a
Sinclair combiner and multicoupler. I was suprised (pleasantly) to find
that Sinclair used one of Chip's high-level preamps in the multicoupler!
Chip has built for Sinclair for many, many
The golden screwdriver is someone who does not know what the hell he is doing
nor should own the screwdriver.
-- Original message --
From: Don Kupferschmidt [EMAIL PROTECTED]
Hi Jeff,
Then, last week, a friend brought over his 440 duplexer (Wacom 678) and
asked me to
At 03:11 PM 2/9/2007, you wrote:
I agree 100%. I've NEVER had any of Chip's preamps fail. Ever. Out of
probably 50 or more in service, amateur and otherwise. They just work.
---Well, I managed to kill one or two when I was first setting up my
EME station. Chip's repairs were fast and
Jeff DePolo [EMAIL PROTECTED] wrote:
Has anyone else looked at the input return loss on their
ARR preamp?
The better question is... have you looked at the input section of
the circuit diagram? Looks like a high Z input doesn't it... :-)
I had one that, when put in place, was throwing
I guess I got an education here tonight with all the users responding . . .
.
Don, KD9PT
- Original Message -
From: Jeff DePolo [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, February 09, 2007 4:54 PM
Subject: RE: [Repeater-Builder] Advanced Receiver Research
Ahh... That explains how all the cores got broken in the last Mastr
II that I worked on..
8-)
df
--- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote:
For those who are inquiring minds and not up to all
of the terminology, what is a golden screwdriver?
Simple:
The better question is... have you looked at the input section of
the circuit diagram? Looks like a high Z input doesn't it... :-)
Don't think I've seen an ARR schematic, but most GaAsFET preamp designs I've
evaluated will tend to produce least noise figure with an input Z quite a
ways away
Hi Nate,
Love those links. Especially the 2nd one. I've decided to buy the drill
set for my test bench. It should come in handy when tuning my TX-RX
28-37-02.
Drilling more holes in the duplexer should make it work more better, or
maybe less worse.
Also, I have an IFR 1200S that's running
Hi Nate,
Love those links. Especially the 2nd one. I've decided to buy the drill
set for my test bench. It should come in handy when tuning my TX-RX
28-37-02.
Drilling more holes in the duplexer should make it work more better, or
maybe less worse.
Also, I have an IFR 1200S that's running
On 2/9/07, na6df [EMAIL PROTECTED] wrote:
Ahh... That explains how all the cores got broken in the last Mastr
II that I worked on..
Yours too? We really should find the guy and break his fingers. (GRIN)
(Well, only one core was broken in this one, but still...)
Nate WY0X
I have a Doug Hall RBI remote Base interface fer sale. I purchased
this unit new about 6 or 7 yrs ago. It is in great condition and
works fine. Will come with the power cord, manual and and 1 rbi to
kenwood 8pin mic pigtail. $135.00 shipped to lower 48 US States.
Contact Dennis no5c
601
A preamp that is tuned with a noise figure meter is in most cases not going
to be the same when installed in the system as the input load is going to be
different. How much the input load changes is going to depend on what it is
hooked to.
Best noise figure performance usually doesn't yield a 50
HI I put it in the mail a good while ago and it came back with the
address label distroyed...I haven't received any emails from
you..Just send me your address off board and I'll put it in the mail
Monday. Sorry!
C
--- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote:
Coy, I
HE said in an earlier post that it stayed keyed with all cards
removed except the 10V regulator card so, I don't think that it's a
audio card problem.
--- In Repeater-Builder@yahoogroups.com, charliejohn74
[EMAIL PROTECTED] wrote:
--- In Repeater-Builder@yahoogroups.com, w4wsm b.runner@
The user side, please
73
Jack
KR9Q
_
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