On Wed, 19 Apr 2006, Jim B. wrote:
Given the growing number of unsold spaces at Dayton, it seems unwise
to chase anyone away for any reason other than selling non-electronic
related items, which there seemed to be quite a bit of going on last
year.
Yeah, selling too much of that
I do get a bit disturbed when I see the usual guys with the black
cat and texas pride amps. I would expect that sort of thing to be
stepped on pretty quick.
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I'm very happy with my 55A (small) IOTA converter simply connected
to my battery, and battery connected to the system bus.
I'll grant that the IOTA could have been a quieter design, but I've
had NO noise problem with it. I am always careful to connect things
properly though.
Thinking of
Hello,
I just bought out a old bankrupt Motorola Service shop, I now have just
about every kind of manual from HT-200's (yes I said HT-200!) to the latest
radio Motorola sold up until about 5 years ago. I got two huge file
cabinets full of manuals as well as several boxes full of the same thing.
Paul,
I need a few minutes to research the proper number for a High-Power Micor
UHF Station.. Eric sent the numbers, but I will have to dig them out of my
email archives..
Also looking for the manual for a TPN-1105 power supply.. also in archives.
Standby and I will do so..
Approximate cost
Sorry about that.. but the thought of getting my hands on some of these old
manuals caused my brain to vapor-lock...
I have replied direct.
73
Mike Perryman
www.k5jmp.us
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Mike Perryman
Sent:
Hey now..!
Don't pick on the Black-Cat Amplifiers... I use one to shut down my
neighbor playing his home stereo too loud. The darn thing will even
hose up his Auto Stereo pretty well.
A nice low frequency semi square wave signal will get him to shut
down his mega-stereos in less than 30
[EMAIL PROTECTED] wrote:
Sorry about that.. but the thought of getting my hands
on some of these old manuals caused my brain to vapor-lock...
I have replied direct.
73
Mike
and a good old Homer Simpson Doh..! to you Mike.
:-)
skipp
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Skipp,
Interesting you should mention the blanketing contour effect..
My 6m machine (51.4 in) was receiving on channel IX from a VHF jamming
vehicle over at the Marine Corps Artillery Training Range about 3km's away.
I got tired of the in-bound mess, and stuffed 700W of RTTY cease and
desist into
Sorry for the off topic.Where better than here to ask this question. We
are looking for amatuer repeaters to link into us. In upstate NY, NJ,
CT. Or we are willing to trade repeater sites to add a new repeater.
contact me via email or 718-999-1436
Thanks
73
Rich N2ROW
www.n2row.net
Anyone have a working one they'd like to part with?
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While I'm at it, does anyone know the magic formula by which the PL
tones are generated? This would be in the form of PL=(Xtal / X)/Y
where X and Y are whole numbers and Xtal is something like 1.000 MHz
or 3.579 MHz
I've seen this somewhere, but I can't recall where.
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Mike,
As much as I can get. grin Wonder what they are new, most of these look
new, the price would probably run 1/2 to 1/3 what they are new. Just a laid
off Ham trying to make a living, such as it is
Paul
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL
There is a simple way to have a reliable backup battery system without a relay.
Try this:
Connect your fused repeater power cable directly to the battery terminals,
without any intervening devices. Connect your power supply to the battery
through a single Schottky diode. Adjust the power
Just about any 5/8 wave antenna mounted on top of a Ford pickup truck. The
roof metal is so thin that frequent flexing from antenna sway, wind resistance,
low tree branch contact can cause metal fatigue on thecab roof. The
antenna NMO mount was installeddirectly above the cab interior
Somebody, maybe Larsen or
Antenna Specialists, used to make a "stiffener" for use with NMO mounts.
It was basically an oversized brass fender washer with a 3/4" hole in the
center. It was thick enough that it stiffened the body near the mount, but
flexible enough that it would take the
OK folks... have done a minor re-write of the duplexer page with a bunch of
updated data..
www.k5jmp.us
look for the duplexer link on the left-hand side..
moderators, and webmasters of RBTIP heads-up... the URL has changes as
well..
73
Mike Perryman
www.k5jmp.us
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At 02:05 PM 04/20/06, you wrote:
OK folks... have done a minor re-write of the duplexer page with a bunch of
updated data..
www.k5jmp.us
look for the duplexer link on the left-hand side..
FYI ...
The Sams web site link is dead...
BTW, wanta try a UHF duplexer using 6 3/8 heliax?
Mike WA6ILQ
Sorry - that was supposed to be a email to Mike, not the list...
...new keyboard can't type any better than the old one...
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The diode is needed because some power supplies have a tendency to
go into a crowbar shutdown mode if the AC input goes away (as
during a power failure) while a DC voltage is maintained at its
output by a battery. Such an event will blow fuses and will almost
certainly shut down the
Thanks Mike
just looked and some of the pic,s are missing
73
Steve
- Original Message -
From: Mike Perryman [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, April 20, 2006 10:05 PM
Subject: RE: [Repeater-Builder] 6m heliax duplexer experiment
OK folks... have
Kugige's evil twin has been busy today!
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Well,what I came up with is since the Micor supplies arent
adjustable,was two silicon diodes in the charging circuit. Drops it to
13.5v then added a contactor,normally closed,with a 125vac coil to
connect direct to the batteries during an outage. I will post the
results once implemented.
Good show Mike!
Q: What would be the effect of using high quality 75 ohm cable (say
double shielded RG-6) for the interconnect cables?
At 03:05 PM 4/20/2006, you wrote:
OK folks... have done a minor re-write of the duplexer page with a bunch of
updated data..
www.k5jmp.us
look for the duplexer
I would guess that the resulting impedance mismatch would mess with the
current nodes somewhat...
In order to acheive peak effeciency, you really want to stay on the odd
numbered 1/4 wave current nodes. Not really sure what the effect on
velocity of propagation would be.. you will definately need
Some of the Consolette type power supplies found in the
MSR-2000 40 watt Canadian Repeaters have a simple TO-3
type (2N3771) transistor one resistor set up to act
as a battery interface circuit. Works great and it's
simple. If someone was really interested, I might be
able to draw up or dig
Not sure of thepost that started this, but I needed a good antenna
mount for my pickup and got tired of drilling holes, etc. into the top of the
cab and knew that lip mount antennas on the hood do not work because of
reflections from the car. I also do not like mag mounts. I took the
I haven't had to buy any in a while, but I did carry them
made by another company (AS). I can still get them during any
normal parts order cycle.
I'm not using the 3/4 NMO style antenna kits anymore unless
I have to. I sell an NMO, which requires a much smaller hole
just slightly larger than
At 4/20/2006 12:46 PM, you wrote:
Just about any 5/8 wave antenna mounted on top of a Ford pickup truck. The
roof metal is so thin that frequent flexing from antenna sway, wind
resistance, low tree branch contact can cause metal fatigue on the cab
roof. The antenna NMO mount was installed
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