Hey guys. It looks like some magic smoke came out of my convertacom the other
day. While I was sitting in traffic the smoke literally came rolling out of it.
After taking things apart, it appears that one of the large 1500uF capacitors
in the switching supply of the unit went bad. I can fix
didn't need to do any hex editing to enter frequencies below 146. Again I
forgot to notate what version of the software I actually have. But none the
less, this is kind of weird.
So anyone ever encounter this before?
--- In Repeater-Builder@yahoogroups.com, hitekgearhead hitekgearh
You guys will have to find a picture of that. It sounds hysterical!
I assume Mr. McKay built the transmitter right into the mic, no?
And you will have to excuse me, but what is a 94?
I myself don't have stories like this because I am a child of the 80's, but I
love hearing about it and am know
I had an interesting occurrence the other night while programing one of my UHF
P200's
It is a radio I use for 70cm and is a 438-470 unit.
Usually at the top right of the display when running the software, the
bandsplit is displayed. Well, I noticed last night that it did not display
438-470,
Thank you all!!
That was exactly it, the LM-1877!
Actually, now that you mention it, I recall seeing it in my Forest Mimms books
from Radio Shack years ago.
And Mike, thanks for confirming the details of the circuit operation for me.
Thanks again!
Albert
BTW, I thought I posted a reply
, Try LM1887.
On Fri, Jul 23, 2010 at 1:28 PM, DCFluX dcf...@... wrote:
Just by your description of the pins, I would suggest you look at the
LM-380, 2.5W amplifier. They are tied together as they act as the
chips heatsink.
On Fri, Jul 23, 2010 at 1:19 PM, hitekgearhead
hitekgearh
Hey Guys. I was looking at the schematic for the above mentioned speaker (thank
you repeater builder site) and I had a few questions.
First, does anyone know where to find a replacement for the 5184320A99 dual
op-amp labeled U1?
Secondly, Is this op-amp basically being used as a buffer,
I have access to some Belden 83242 coax which is of RG-142B/U type.
The specifications look pretty good but I was wondering if anyone has any
inputs or thoughts on it's use.
Also, does it require any special connectors?
Thanks
I know I am revisiting this again but I could use some clarification.
It has been stated before that the Motorola low band helical antennas have a
useful bandwidth of about 1MHz.
I was just wondering why that was the case, say in comparison to HT antennas in
other bands. For instance, (and
Mike,
I didn't know if you were determined to make your own leads or not. But if you
are interested, you can get just about anything you want for your Triplett
meter at the following website.
http://www.byramlabs.com/triplett.php
http://www.byramlabs.com/triplett_leads.php
I have no
Thanks everyone for the input.
I can understand the statements regarding standardizing on connectors and cable
in order to minimize tooling.
The connectors I originally purchased were not labeled in any way. They were
cheapies I specifically bought at a hamfest in order to get a little
the center pins too, depending upon which
connectors I get.
I'm off and running. Thanks for the good start in the coax department.
-Albert
--- In Repeater-Builder@yahoogroups.com, Kris Kirby k...@... wrote:
On Mon, 12 Apr 2010, hitekgearhead wrote:
I know this has been thrown around a bit
I know this has been thrown around a bit before but I could use a little
assistance.
I just purchased a crimper and a couple sets of dies. I bought some cheap BNC
and TNC connectors to practice with along with some RG-58A/U cable.
I bought 3 different sets of dies. One of which is for RG-8
I was looking for info on this radio.
From what I have gathered so far, it appears to be from the Genesis line but I
am not sure. I know what the P200 is, and that is definitely part of the
Genesis line, but what is the P210?
I can't seem to find much info on the net regarding it.
Can anyone
And that was the kind of thing I was referring to. I saw a mobile mount that
used some small diameter heliax (about 1/4) from the antenna to the radio. I
immagine it was for 800-900MHz or something like that.
Basically, I was just curious as to how common and/or practical it might be.
In a
Hey guys,
I was wondering if you all would entertain two questions that I have.
First, what is the purpose/use of reverse polarity coax connectors such as SMA
and TNC? I assume there are others but those are the ones I have seen.
Secondly, I ran across something regarding using small diameter
Really?. is that the real purpose of reverse-polarity connectors? I am
quite flabbergasted..
So what about the other question?.. using heliax in mobile installations?
Thanks
Albert
--- In Repeater-Builder@yahoogroups.com, Glenn Little WB4UIV
glennmaill...@... wrote:
We
-buil...@yahoogroups.com] On Behalf Of hitekgearhead
I know I am going to get the singular answer of WHY but I really would
like some technical input on this.
In my car I have an old Genesis series convertacom connected to a dual band
Comet antenna. I often will swap my VHF and UHF HT back
A while back didn't someone post that they had UHF Motorola Genesis series
antennas available at a good price? I am looking for a few, maybe as many as a
dozen, if the price is right.
Thanks,
Albert
I know I am going to get the singular answer of WHY but I really would like
some technical input on this.
In my car I have an old Genesis series convertacom connected to a dual band
Comet antenna. I often will swap my VHF and UHF HT back and forth and utilize
the dual band capability of my
Hey guys,
I have the opportunity to purchase some surplus Andrew heliax.
The model is EFX2RN-50. It is 3/8
At $0.50/foot, is this a good deal? I don't think connectors are installed.
I am thinking of using it for amateur use on the VHF UHF bands at home.
What do you think?
-Albert
.
--- Jeff WN3A
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of hitekgearhead
Sent: Tuesday, December 08, 2009 2:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Price Check on aisle five
a couple of Motorola 6 bank chargers for the older MX series HT's.
The model number is NTN4831A. I have not checked for functionality but they are
in really good shape. For the price, who cares. Just come get them. They are in
my way.
I would rather not ship, but we can discuss that if you
be helpfull if you would indicate where you are located since you
are not interested in shipping.
Milt
N3LTQ
- Original Message -
From: hitekgearhead hitekgearh...@...
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, December 01, 2009 11:18 AM
Subject: [Repeater-Builder] Would
I want to thank you all for you input, insight, and stories.
You have confirmed exactly what I was thinking.
I too have often experienced vinyl electrical tape getting gooey and sticky in
high temp environments (automobiles). This is why I use heat shrink on most
things.
Also, I didn't think
I have heard you all mention scotch super 33 vinyl electrical tape and
recommended it for a few different uses. Is there still any use for rubber and
cloth type electrical tapes for certain specific tasks?
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