Now that I am home from the hospital I can respond a bit better.
The amp does fine without the duplexer inline. Full power and it follows the
Mirage chart. But I had a thought (that's SCARY) I pulled out my seldom used
MFJ 259 and dialed in my output. I plugged it into the duplexer TX side and
Hi Mike,
Depends on what you want to know I suppose?
Gareth Bennett
RadioSystems Limited
P.O. Box 5202
Dunedin 9024
New Zealand
DDI: (03) 489 1101
FAX: (03) 489 1151
MOB: (0224) 588 377
gare...@radsys.co.nz
- Original Message -
From: Mike Morris
To:
Hi Mike,
I have accumulated a fair bit of knowledge over the years and I can find a
reasonable amount of info, if that is what you are asking. I 'listen in' here
and on the Tait group.
niteviser
--- In Repeater-Builder@yahoogroups.com, Mike Morris wa6i...@... wrote:
I converted it and added
On Thu, 12 Aug 2010, skipp025 wrote:
brand diplexer rated at 25000 watts on 191 Mhz from a analog TV
station. I feel a little bit like the dog that catches the car he
is chasing. Now that I have it, what can I do with it? Any ideas?
Can it go to 220? Does anyone have any experience
Well if you think about it, Nate, VE's ARE an off-site testing facillity... of
sorts.
Mark - N9WYS (also a pilot)
--- On Thu, 8/12/10, Nate Duehr n...@natetech.com wrote:
Side-comment: As a pilot and IT person, I've been taking tests for both at
professional testing locations like ProMetric
Glenn and Group,
You were right on the channel elment being the issue ( placed a kxn 1024 for
uhf and right on Rx.) Now i am looking for a KXN 1019 VHF not finding any in
boxes or ebay. anyone have one they can spare?
Ryan n3ssl
--- In Repeater-Builder@yahoogroups.com, Glenn Little WB4UIV
I have a note in my file that I do not recall where it came from relative to
cable length between the duplexer and the TX or between the duplexer and
additional filter. Length = (30)(32.785)(vf/freq).
30 is for 30 degrees, vf is velocity factor, freq is the average of the pass
and reject
If it wasnt Friday the 13th and I wasnt a bonehead and left my shop keys at
home - I would check our stash for you. Can you wait til MOnday and I will?
John Hymes
La Rue Communications
10 S. Aurora Street
Stockton, CA 95202
http://tinyurl.com/2dtngmn
- Original Message -
From: n3ssl
The last time I delt with Tait equipment was their mobiles back in
the early 90's. They worked well and were rugged (installed in
helicopters so you know there was lots of vibration!).
Anyway, consider the following:
Tait T800 Series II Repeater UHF 440-480
100W
Consists of:
T808-10-0012 110
Hi
the T800,s both series one and two are great, series one uses eproms
series two is an eeprom programmed using a single data line via an rj11
skt on the front and rear. In the UK a series two sells for around 400ukp
a low band series one for around 200ukp.
73
Steve
- Original Message -
Nate,
I have both the 12th and 14th edition of the ARRL Antenna books, the 12th I
acquired in 1974 and have read and re-read the section on transmission lines
and
impedance matching probabily more than anyone else has. I sometimes learn new
things with each re-reading, as there is much to be
Hmm, the formula is a bit off, but... 30 x 32.785 = 983.55. I'll also
bet length is expressed in feet.
Looks eerily like someone wants you to cut a one-wavelength piece of
coax cut at the mean repeater frequency.
Just a guess.
73, Russ WB8ZCC
On 8/13/2010 11:38 AM, Sid wrote:
I have a
Hi Allan,
Do we really care what the output impedance of the transmitter is? Most
transmitters do not present a pure 50 ohm output but are tuned to transfer
maximum power into a 50 ohm load. This often comes out to something way
different than a 50 ohm source impedance.
As the source
Gary,
Perhaps you can give us some examples to illustrate your thoughts.
Perhaps you can also explain why GE chose to include a pi network on the output
of the HB M-2 base xmtr to match the xmtr output to 50 Ohms, the shunt
capacitor
values and the series inductor value used.
I'm interested to
I have a DB224-E on order along with hard line and a receive filter and crystal
assembly. It seems that I have a 147.435 high power remote with a 12 element
beam and 600 watts aimed through me from 1.105MHz away and only two city
blocks. The 435 repeater is legendary. We've picked up
I haven't read all of the relies on this, but I also haven't read that there is
proof that your computer actually sent the messages. All that is needed is your
email address int he reply-to field in the message header and you get the
blame. I own and operate a mid-sized web hosting company and
niteviser,
Thanks a lot, circuit downloaded without trouble.
Gordon ZL1KL
I do not need to read these anymore. I am not mad just getting too many emails.
Hate to see Ya Go but if You must here is one More You will get , You
subscribed and You have to Unsubscribe Yourself unless You get kicked off ,
At the Bottom of the Page You will see Where to do it You can also set up
how You would like to receive the E-Mails
73 De Don KA9QJG
From:
I'm going to take a stab at this, at the risk of possibly stepping on Gary's
toes.
1. RF amplifiers in general (not only solid state) don't *have* a 50 ohm
source impedance, they're (nominally) designed to work *into* a 50 ohm load.
The difference is subtle, but significant. Transmitters aren't
The amp does fine without the duplexer inline. Full power and
it follows the Mirage chart. But I had a thought (that's
SCARY) I pulled out my seldom used MFJ 259 and dialed in my
output. I plugged it into the duplexer TX side and noted that
it reads 39 ohms. I disconnected the remaining
I must have missed some posts - my inbox ran out of space (I'm on the road
and not checking email as often as I usually do), so my apologies if I'm
asking questions that have already been answered...
Allan Crites and I are currently in discussion which will
be used as the basis of a RB web
throw away the duplexer and get another
i seem to read everything you state it is fine until i plug in the duplexor
inline
at least if not, do you have another duplexer to try in its place
Marcus
On Sat, Aug 14, 2010 at 1:29 PM, Jeff DePolo j...@broadsci.com wrote:
The amp does fine
can i pls have a copy of it, even if need be yousendit.com to me
i have a circuit here somewhere, but fail so far to find it, and i know i
don't have it online
Marcus
On Sat, Aug 14, 2010 at 11:58 AM, Gordon Cooper zl...@nzart.org.nz wrote:
niteviser,
Thanks a lot, circuit downloaded
I will stay but switched to digest
- Original Message -
From: ka9qjg
To: Repeater-Builder@yahoogroups.com
Sent: Friday, August 13, 2010 8:15 PM
Subject: RE: [Repeater-Builder] unsubscribe
Hate to see Ya Go but if You must here is one More You will get , You
In the Files section Marcus. 296-01 PS as a jpeg. It is all I have on it, but
it was with the 296/11 and /16 circuits, which are slightly different.
niteviser
--- In Repeater-Builder@yahoogroups.com, x.tait.tech x.tait.t...@... wrote:
can i pls have a copy of it, even if need be yousendit.com
I am in need of a 2-5 watt range amp to drive an external amplifier, the
stock VHF MVP amp is adjustable from 8-25 watts output,
I think by bypassing Q202 I will be close to my goal. I need to know
where to connect the coax to keep Q201 from getting mad.
I have done this on UHF MVP's before
Jeff DePolo wrote:
Maybe I'm not understanding right. Are you saying that by varying the cable
length between the transmitter and the duplexer that you can affect the
insertion loss of the duplexer?
No.
Because the impedance is not matched between the transmitter and
duplexer, the
At 06:44 PM 08/13/10, you wrote:
can i pls have a copy of it, even if need be
http://yousendit.comyousendit.com to me
Go to www.repeater-builder.com then to Tait then right click on it
and download it.
Thomas Oliver wrote:
I am in need of a 2-5 watt range amp to drive an external amplifier,
the stock VHF MVP amp is adjustable from 8-25 watts output,
I think by bypassing Q202 I will be close to my goal. I need to know
where to connect the coax to keep Q201 from getting mad.
I have done
On Aug 13, 2010, at 7:17 AM, Mark Tomany wrote:
Well if you think about it, Nate, VE's ARE an off-site testing facillity...
of sorts.
Mark - N9WYS (also a pilot)
Heh, good points all. Just had a hmm, that's interesting thought in the
middle of the night, that wasn't so interesting
Allan,
Wow... sounds like a great article you guys are working on! Now that I see the
scope of what you're up to, it sounds like a great addition to the website.
(Well, it would have been a great addition anyway... but wow!)
You give me FAR too much credit, if you think I could add to it.
On Aug 13, 2010, at 7:22 PM, Jeff DePolo wrote:
d) To charge more. I'm half-joking on this; I can't say I've statistically
seen more or less failures on M2 PA's with or without the Z-matcher, so I'll
give this answer half a smiley: .-,
Lucky. I have. Learned that lesson... ;-)
Got a pile
This is an experiment to see if I could make the link stand out. This is NOT
to start problems!
73.de Ken Cook, W8DZN
http://groups.yahoo.com/;_ylc=X3oDMTJjdHNidXRtBF9TAzk3NDc2NTkwBGdycElkAzEwN
DE2OARncnBzcElkAzE3MDUwNjMxMDgEc2VjA2Z0cgRzbGsDZ2ZwBHN0aW1lAzEyODE3NDg1NTI-
Yahoo! Groups
Well, I think it's funny.
Richard, N7TGB
www.n7tgb.net
The problem with socialism is that eventually you run out of other people's
money
--Margaret Thatcher
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Kenneth Cook
Sent: Friday,
Jeff,
My internet service was interrupted again tonight for 2 hrs as well as last
night and I just got off the phone with the tech in MX city for 35 min till he
restored the service. He wants to get me a new modem to solve my problem but
can't deliver it until Tuesday at which time I will be
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