开云体育

Put a couple of Solar panels the site with a couple of batteries, maybe 4
batteries.
Steve, WB6YQP

Why not use an old alternator and an ox?

Have you priced ox fuel lately?

Ray J. Vaughan, MS, CBTE
KD4BBM
ray@...

At 01:54 PM 3/15/99 EST, you wrote:

From: w7ntf@...


Greetings...
This is Gary, W7NTF, in Spanaway, WA. I recently acquired several GE Mastr-
Exec II VHF base stations, both of which are currently in the 140 mhz range.
They are very clean, handsome rigs, with mic, power supply built in, etc, and
have multi-channel capability. Measured power out is about 30W on a dummy
load. My question is this:

Is anyone using this type of rig for repeater operation? If so, what problems
did you encounter? I'm wondering if it's worth trying to build repeaters out
of them, or should I bag that idea and maybe think about using them for ham-
simplex voice use, or maybe even consider converting them to 9600 baud packet
for use on the local TCPIP repeater in the Seattle area? What do you think?

I can't help you with the packet questions... but I've done a lot of the
repeater conversions. Perfect radio for a conversion.

Check out my site on how to convert an Exec II desk top into a repeater:



Have fun.

Ray J. Vaughan, MS, CBTE
KD4BBM
ray@...

In a message dated 3/15/99, 1114 AM, Repeater-builder@... writes:
<<>>

Ray,
Thanks for the info. Your web site is top notch. I am printing the information
now.

73 de Gary, W7NTF

---

Cristobal,

I did locate the article I was thinking of. It was a design feature
article in the Feb 4th issue of EDN by a ham that works for Maxim.
Fortunately for those that don't subscribe, EDN has this article available
on line.

The URL for the PDF version is:

For the Online version:

The article is geared towards maximizing the output of a solar panel to
charge batteries and presents a good general discussion on the topic of
solar panel energy maximization.

--Dave


* REPLY SEPARATOR *

On 3/15/99, at 7:13 PM, Cristobal Inos wrote:

From: Cristobal Inos <soni@...>

Dave Karr wrote:

From: "Dave Karr" <davek@...>

A linear regulator really isn't the best idea here since power

conservation

is a factor. As shown about 50% of the power would be dissipated as

heat.

A switching regulator should be able to achieve >85% effieciency fairly
easily.

Of additional interest, there was something in EDN within the last month

or

so related to maximizing the output of solar panels to charge batteries,
can't remember if it was presented as an article or as an application
example from Maxim or Linear Tech. One concept presented was taking the
output from a single panel and stepping it up to charge a higher battery
voltage. I'll dig it up if anyone is interested.

* REPLY SEPARATOR *

On 3/14/99, at 11:37 PM, Daniel Byrd wrote:

If you go with a 24 volt system, no need to bye the 24 to 12 reg for
100+.
You can build it for 20 to 30 dollars.
This might help you.

--Dave

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------REPLY SEPARATOR------


DAVE:

Please keep me posted, I am interested in maximizing solar panel
efficiency. I am now currently employing 12 panels of 53 watts each
and connected to 10 each 200 ah batteries...I suspect I am not getting
the most of solar energies....Police use of Repeater in mountain site.

thanks

chris inos

wh6um


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--Dave

Greetings...
This is Gary, W7NTF, in Spanaway, WA. I recently acquired several GE Mastr-
Exec II VHF base stations, both of which are currently in the 140 mhz range.
They are very clean, handsome rigs, with mic, power supply built in, etc, and
have multi-channel capability. Measured power out is about 30W on a dummy
load. My question is this:

Is anyone using this type of rig for repeater operation? If so, what problems
did you encounter? I'm wondering if it's worth trying to build repeaters out
of them, or should I bag that idea and maybe think about using them for ham-
simplex voice use, or maybe even consider converting them to 9600 baud packet
for use on the local TCPIP repeater in the Seattle area? What do you think?

Speaking of 9600 baud packet, has anyone put these rigs on 9600? I have a 25w
GE Custom MVP mobile rig that easily went to 9600 baud packet and has become
the workhorse of my TCPIP station..... Without in depth comparison it would
appear as if the MVP and MASTR-Exec II are identical inside except for the
power supply and channel board for extra crystals. Ideas?

73, de Gary, W7NTF

get a couple of gel cell batteries and a solar panel to keep them charged.
look into what it would take to get power to the site. it is going to be a
bear without commercial power...good luck ed n4ale

A linear regulator really isn't the best idea here since power conservation
is a factor. As shown about 50% of the power would be dissipated as heat.
A switching regulator should be able to achieve >85% effieciency fairly
easily.

Of additional interest, there was something in EDN within the last month or
so related to maximizing the output of solar panels to charge batteries,
can't remember if it was presented as an article or as an application
example from Maxim or Linear Tech. One concept presented was taking the
output from a single panel and stepping it up to charge a higher battery
voltage. I'll dig it up if anyone is interested.

* REPLY SEPARATOR *

On 3/14/99, at 11:37 PM, Daniel Byrd wrote:

If you go with a 24 volt system, no need to bye the 24 to 12 reg for
100+.
You can build it for 20 to 30 dollars.
This might help you.

--Dave

If you go with a 24 volt system, no need to bye the 24 to 12 reg for
100+.
You can build it for 20 to 30 dollars.
This might help you.

Hi.....

My name is Max and my call is KP4PK. I run a 144, 222, and 440 mhz machines
on solar and wind power. I use 6, 60 watt solar panels and a 300 watt wind
mill all at 24V. That feeds (8) 6v 220 amp golf cart batteries. I use a 24V
to 13.8V converter to power the repeaters and packet nodes. The system runs
basically with out much supervision other than going to the site every 6 to
8 weeks to check the batteries connections for corrosion and cleaning the
solar panels.

This is not a cheap system. Figure abt $425.00 for each solar panel. abt
$650.00 for the windmill, abt $90.00 per battery, add another $125.00 for
the charge controller and another $100.00 for the voltage down converter.

I bought all the hardware ( but the batteries, which i bought locally) from
Sunelco 1-800-338-6844 and Atlantic Solar Products at 1-410-686-2500. They
can provide you with catalogs and more information.

I hope this helps,

73,

Max KP4PK

Steaven D. Rogers, KU4VR wrote:

We have used the small Cellwave duplexers in numerous commercial repeaters.
A few things to remember ;

1.) They will not provide enough isolation in higher power situations.
2.) I believe you need at least 5Mhz separation for the compact units.
3.) Most likely you will not be able to put a pre-amp on the rx'r.
(depending on your coverage requirements)


If i had a choice i would use a large duplexer. It will provide the best
isolation
( for a pre-amp) and the ability to feed higher power thru it. Some of our
100W repeater clean up at .10uV ( Great for rural portable coverage). As
long as the specifications meet your needs the compact duplexers work great.

My two cents worth,

Scott

I have located a site for my UFH repeater. However, this site does not
have any power that is available to me. Any ideas on how to run my
machine? I have been looking at battery, but I don't think it will run
to long unless I have quite a few batteries. The entire system will
fraw no more that 5 amps. This site is not out of the way for me to go
up every few days and change out a couple of batteries. I just don't
think they will last that long.

Steaven, KU4VR

I use the Cellwave mobile duplexers on atleast 4 out 5 of my 440
repeaters and have excellent luck with them. Of course it limits you to
no more that 50 watts, but with my system I have not found a need for
high power. These duplexers also fit very nicely in the Kenwood TKR-820
repeaters.

Bernie (N1IMO)
N1IMO/N1IMN Repeater System
PO Box 991 Hollis, NH 03049-0991
29.64 /53.93/145.31/146.73/147.195/224.50/442.15/443.50
446.175/449.375 MHz CTCSS: 88.5
www.qsl.net/n1imo

From K4yd@...


Thanks for the previous info on mobile duplexers. has anyone used the celwave small duplexer in the ham bands?

k4yd

Hi...

I have a couple of questions.

1.) Saw these models in a FOR SALE flyer:

RG** EXEC
RT** EXEC II
EC** MASTR II
EX** MASTR II
F3** MONOGRAM

What do these prefixes signify? AC base? Repeater?
Or special mobile products?

2. What models are crystal control (non-programmable)?

Monogram, Century II, MVS, Custom MVP, MLS, Delta,
Delta SX, Etc...

I'm a new GE fan just starting out.

Thanks for the help!


Jim Z
N9JZ

........................................................
Listen to WBAL Radio Live on the Net and Get FREE EMAIL - at

jim maike wrote:

From: jim maike <lionjim@...>

thank you very much i sold the acc-96 system in 4 hours on monday

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------------------------------------------------------------------------> This list is sponsored by the owners and users of "RBTIP"

Hi:

Do you have anything for sale...repeaters/ etc.

chris inos
wh6um

Cristobal Inos wrote:

From: Cristobal Inos <soni@...>

jim maike wrote:

From: jim maike <lionjim@...>

thank you very much i sold the acc-96 system in 4 hours on monday

------------------------------------------------------------------------> Have you visited our new web site?

Onelist: Helping to create Internet communities
------------------------------------------------------------------------> This list is sponsored by the owners and users of "RBTIP"

Hi:

Do you have anything for sale...repeaters/ etc.

chris inos
wh6um

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not write now thanks jim

Greetings to all other fledgling repeater builders, those of you that have been successful keep me and will hopefully answer my questions and I will hopefully be able to help others... I'll run down the hardware I've amassed and maybe someone(s) out there can run it through their gray matter and see what you come up with.

(3) Micor UHF Mobile 45w units

Micro Controller Concepts 1000V voice unit, built in ct64 ctcss, rack case

TE Systems UHF AMP 25Win-175+ out, GasFET Preamp,

Radio Shaft's wunnferful Discone - an airborne crummy load for whenever I need to hook something up to an antenna on chimney straps on 10' Mast about 50ft up.

Comet GP-15 Tribander on 25ft of Mast - I get extraordinary signal reports and great DX on 2M and 440. Planning on using it for the repeater unless something better comes along.

Both antennas are on 90ft of International Wire and Cable 9086 and a #4 ground into 8ft ground rod. Extra run of LMR Ultra, a run of Cat5, and RG58, with the two antenna runs are bundled down the side of the house. I put in a 3" PVC wire chase pipe through the outside wall to the inside basement shack so that this all runs in and I can always put more cables through for testing and expansion plans that I know I'll do.

(3) 1KW UPS units

(2) Icom W32a HT's, drop in charger, 6 batteries, Computer Interface, built-in extended recieve and full crossband repeat (Email for info, web page in progress), antennas, all the goodies, I got one for me, thinking it was the coolest piece of handheld radio I'd seen, well a family member got his ticket, I got one for him as a trade-up gift/reward and I got stiffed (read: forsale or trade possibile)

(2) Icom IC-2710 Dual Band extended everything with Tone and DTMF decoders for full crossband repeat with remote control, neat neat radios, get some intermod in the big city - the following 2 items seem to take care of that.

2M homebrew 2 stage helical resonator given me from another club member retuned to peak output at 146Mhz.

DCI 146-4H 2 Meter BandPass Mod Box.

A 6 can set of 406-512Mhz duplexer(s).

125ft of 7/8'ths hardline

Well, I want to use the Micor's for the repeater. How hard is it to re-tune these things? I have a friend that will be doing a lot of the work on these as I am recovering from a 14 level spinal fusion. I have been told that these units will function just fine as a stand alone repeater. My Friend is PUSHING me to getting a Hamtronics Exciter (dip switch settable is nice, but it's not his money being spent, it's mine) and then use the PA stage of the Micor.

With 3 of these units what I was envisioning was 2 of them ready to rock and roll as stand alone units, one online, the other ready to go spare, and the third used as a remote base radio, or perhaps a link to another site. As it stands I could see tuning them both up but then using the receive section of one to the transmit of the other. But as I've said, I know that these micors have been used to support the links for the SUPERLINK - From Wisconsin to Montana without problems or we couldn't yack from MadCity to no-where North Dakota. (no offense).

I bought the controller to eventually get a machine up. It was my Xmas present from $$ from them and money that I had made selling off one of my Macintosh computers. I originally wanted to get my hands on, for example, a pair of HTX202's (Have 1 202, if someone can kinko's me a service manual so I can get the COS line outside to put into the controller, HT body and antenna, no battery holder or nicad) and a pair of 404's and add a connector to the HTs (or mobiles, or whatever) and program up the controller, use some of the additional logic lines to interface the controller to a computer so I could put in time and temp and stuff like that dumped in from the computer into the voice ID in the controller so when I went on the air I would have an unique machine, not another blip and beep box.

Well, this has taken me some number of hours to type and think it all through, you can reply to the reflector to bounce ideas around, as me getting the controller was supposed to start as an intellectual exercize to begin with, I'd like to see what the other 'experts' ideas and opinions/options are out there. Please also Email me directly, mailto:audiohead@...

Bryant "BT" Thompson
2069 Viburnum Trail
Eagan MN 55122-2354
kc0edo@... for reflected stuff like joke mailing lists
612-526-1296 24hr's numeric pager/45sec voicemail

does any body have information on building up a atv repeater system. we have access to a live weather radar here but its on cable. and most of the hams in our clud does not have access to the cable. thanks-------billy----k5py

thank you very much i sold the acc-96 system in 4 hours on monday