Re: [Repeater-Builder] DTMF Decoder

If you don't understand how pre-emphasis, de-emphasis, and twist happen, and why they happen, look at this explanatory article: At 04:10 PM 03/24/08, you wrote: Vern, it sounds like you may have some other problems that might cause a har

Re: RE: [Repeater-Builder] Using Alinco DR-605 Dual Band Mobiles for Repeater

About any Ham vintage rig made in last 15 years is not good for a repeater. On the receiver the clue is it has broad band receive. Some receivers have some tuning geared to the rcv freq, but very little. It is radically different than a rcvr with helical front end filter that has to be tuned

Re: [Repeater-Builder] Re: Using Alinco DR-605 Dual Band Mobiles for Repeater

Yes, it can. Type acceptance is for the TX although there are some part 15 that about anything with an oscillator must meet. Most all electronic equip is Part 15 accept. It deals mostly with low level specs. It is the TX that is most looked at. I would say most all Radio Shack and others sca

Re: Re: [Repeater-Builder] DTMF Decoder

Vern, I have not used a sound card for DTMF decoding, but the decoder on the Echolink card (I am assuming for the repeaters you are using one) I find DTMF decoder problems are almost always level related. Most decoders work over a reasonably wide range including twist (the difference between t

Res: [Repeater-Builder] DTMF Decoder

http://www.hamtronix.com.br/ted_us.html http://www.hamtronix.com.br/ech_us.html Regards. Junior - Brazil. - Mensagem original De: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> Para: Repeater-Builder@yahoogroups.com Enviadas: Segunda-feira, 24 de Março de 2008 15:55:56 Assunto: [Repeater-Build

RE: [Repeater-Builder] RE: Sinclair Q202 duplexer harness info

Eric: Thank you for taking the time to do this. I will make the cable lengths 14" as measured center to center on the T connectors. I will use MIL spec 214. I found crimp rings at the RF connection. (Just in case you might need some one day) 73 Gregg _ From: Repeater-Builder@y

Re: [Repeater-Builder] Wanted to buy - MICOR TPN1110B

There is one on e-bay now at: http://cgi.ebay.com/MOTOROLA-MICOR-REPEATER-117-VAC-POWER-SUPPLY_W0QQitemZ200209525287QQihZ010QQcategoryZ66977QQssPageNameZWDVWQQrdZ1QQcmdZViewItem The bid is at $44 w/0 bids with reasonable shipping. Buy now $111 which is little high although compared to an Astron

Re: Re: [Repeater-Builder] Antenna question

There is a DB224 with internal harness. Not made for Ham band, but for 150-160, etc. 73, ron, n9ee/r >From: Larry Wagoner <[EMAIL PROTECTED]> >Date: 2008/03/24 Mon PM 05:41:52 CDT >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] Antenna question > >At 05

Re: [Repeater-Builder] Re: 24 vdc to 12 vdc

Depending on the load connecting across one battery, the one connected to ground or the lower of the 2 12 batteries, will work. I would not do is load is heavy because I am sure the charging system is for both batteries and draining one much more than the other could upset things. Kirchhoff's

Re: Re: [Repeater-Builder] DTMF Decoder

The RC-1000 uses a CM8880 which is a DTMF decoder/encoder. It requires a CPU type interface to allow reading and writing and must be set up for the proper mode. It is not difficult, but much more than what you need. The CM8870 is decoder only, easy to use and straight forward...4 data lines and

RE: [Repeater-Builder] Re: 24 vdc to 12 vdc

The practical effect is that the charge on the two batteries will be imbalanced, and should the charger ever get the more charge battery fully charged, the under charged battery will fool the charger into thinking the pair is not fully charged, resulting the in the fully charged battery being overc

Re: [Repeater-Builder] DTMF Decoder

All we want to do is be able to do the node selection and control that would normally be done in the software portion of echolink. So from what you are saying here I can use the CM8870 feed audio in take the 4 data lines and the strobe and hook them up to a serial port and I should be able to

Re: [Repeater-Builder] Re: 24 vdc to 12 vdc

I have installed land mobile stuff in Gov Surplus fire equipment, (right next to Fort Hood) and 24 volt Forestry Service and 24 V street sweeping equipment over the years. I will NOT install any equipment across one battery in a 24 V string. Take it somewhere else and let them do it. I will

Re: RE: [Repeater-Builder] Using Alinco DR-605 Dual Band Mobiles for Repeater

Paul & Rob, The issue with having the rig capable of transmitting on GMRS can be a problem. Many Ham rigs can be legally opened for MARS, etc use and this will often open for many other frequencies. I would say if the rig were in a repeater then a problem. I would think just having the rig wo

Re: [Repeater-Builder] 24 vdc to 12vdc

Rick, Definitely do not use a resistor. Its drop depends on current draw and if the rig is a transceiver it will draw much more current on TX than RX changing the drop. You can use the lower battery, the one connected to ground. However, as some others suggested might be better to have a 24-

RE: [Repeater-Builder] 24 vdc to 12vdc

Page 57 of the latest AES catalog... Astron H2412-12, 28VDC to 13.8 VDC @ 10A - $59.99. Or H2412-24, rated at 20A - $89.99. http://www.aesham.com/pdf/page56-61.pdf Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of kf0m Astron makes a unit that will co

[Repeater-Builder] 24 vdc to 12vdc

Some of the earlier equipment with 24 volt power and tube radios did use a big ballast resistor. It did put out some heat. There was not that much difference in current draw between send and receive, so you might have 14 volts on receive and drop to 11 or so on send - with solid state the cur

RE: [Repeater-Builder] DTMF Decoder

A long time ago I used a voice/fax modem to decode DTMF on a PC, it was tricky trying to get it in the right mode but once I did the digits just came in the com port! Rob From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTE

Re: Re: [Repeater-Builder] DTMF Decoder

I don't think you can connect directly to the serial port for it acts as a RS232 port with serial data. I think Echolink board read the DTMF data and converted to serial data to feed the computer. I really do not know how to connect the 8870 for Echolink use. 73, ron, n9ee/r >From: [EMAI

Re: Re: [Repeater-Builder] Antenna question

Maybe that's what he has, even though he said it wasn't a DB products. But he said antenna rod, not tubing. Was that particular model made with rod? Chuck WB2EDV - Original Message - From: "Ron Wright" <[EMAIL PROTECTED]> To: Sent: Tuesday, March 25, 2008 7:57 AM Subject: Re: Re: [Re

Re: RE: [Repeater-Builder] Using Alinco DR-605 Dual Band Mobiles for Repeater

At 3/25/2008 03:53, you wrote: >About any Ham vintage rig made in last 15 years is not good for a >repeater. On the receiver the clue is it has broad band receive. Well, then a lot of recent vintage repeaters like the Vertex are not good for repeaters, even though that's what they're made for.

RE: RE: [Repeater-Builder] Using Alinco DR-605 Dual Band Mobiles for Repeater

Ron, Yes, he is wanting this as a GMRS repeater which I would think is very illegal. On the other hand, anything is legal in an emergency. Paul -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright Sent: Tuesday, March 25, 2008 7:2

Re: [Repeater-Builder] DTMF Decoder

Here is something interesting. I downloaded a demo of a software DTMF decoder and have it decoding all tones through the repeater. There is nothing I seem to be able to do to Echolink to get more than about 1/2 of the tones. Vern

[Repeater-Builder] Re: DTMF Decoder

As someone had pointed out earlier, you also need a PIC or some other device to read the 5 parallel bits from the DTMF decoder, and decode/re-encode them into the serial stream. You can not hook an 8870 direct to a serial port. You are going to require the programmable PIC because you have to m

Re: [Repeater-Builder] Re: 24 vdc to 12vdc

Speaking of odd ball power problems, I have a new in box Astron model 4812-20 converter. 32 to 56 volts input, 13.8 volts out @20 amps. Great for shipboard or railroad use... $40.00 shipped anywhere in USA lance N2HBA - Original Message - From: Dave VanHorn To: Repeater-Builder@y

Re: [Repeater-Builder] Re: 24 vdc to 12vdc

Along this same line, I still have a couple of Motorola 12v to 6v power converters. They were of the synchronous vibrator design, with no rectifiers. The primary vibrator contacts closed in synchronous fashion with the secondary contacts on the lower voltage winding giving you 6 volts output w

Re: [Repeater-Builder] Re: 24 vdc to 12 vdc

At 05:22 3/25/2008, Steve S. Bosshard (NU5D) wrote: >any protection diodes - 10 amp protection diode against 400 amp starter >current - no contest. Steve, this confuses the dickens out of me. I now understand the reverse polarity part, but won't the protection diode be reverse direction, and t

RE: [Repeater-Builder] 24 vdc to 12vdc

Hello Group, I will say right now, a resistor is a bad idea but it can work of done correctly and the load is a constant. Back before I knew better I did just that. I needed 12 VDC for the filament of a GE Mastr Pro UHF transmitter, I can't remember the current right now, it's been 20 years. I

RE: [Repeater-Builder] 24 vdc to 12vdc

Hello Group, I will say right now, a resistor is a bad idea but it can work of done correctly and the load is a constant. Back before I knew better I did just that. I needed 12 VDC for the filament of a GE Mastr Pro UHF transmitter, I can't remember the current right now, it's been 20 years. I

RE: [Repeater-Builder] 24 vdc to 12vdc

Hello Group, I will say right now, a resistor is a bad idea but it can work of done correctly and the load is a constant. Back before I knew better I did just that. I needed 12 VDC for the filament of a GE Mastr Pro UHF transmitter, I can't remember the current right now, it's been 20 years. I

RE: [Repeater-Builder] 24 vdc to 12vdc

Did everyone get this email three time like I did? I only sent it once. Sorry bout that Paul -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Paul Finch Sent: Tuesday, March 25, 2008 11:05 AM To: Repeater-Builder@yahoogroups.com Subje

Re: [Repeater-Builder] 24 vdc to 12vdc

Three here. Chuck WB2EDV - Original Message - From: "Paul Finch" <[EMAIL PROTECTED]> To: Sent: Tuesday, March 25, 2008 12:17 PM Subject: RE: [Repeater-Builder] 24 vdc to 12vdc > Did everyone get this email three time like I did? I only sent it once. > Sorry bout that > > Paul >

Re: [Repeater-Builder] Re: 24 vdc to 12 vdc

This assumes that the installer did not fuse the + lead to the radio. Normally a 25 to 35 watt radio has a 15 amp fuse but you might be surprised how many times the power cable has been cut and no fuse. Anyhow, without a fuse, the reverse protection diode or transorb in the radio tries to sho

RE: [Repeater-Builder] 24 vdc to 12vdc

The Xantrex converters I mentioned will take any input from 14v to 80v and deliver 40 amps out.. the output is actually a full blown 3 stage battery charger... so you really need to have a gel cell on the output, which will double as filtering.. and should work just fine under any load conditions,

Re: Re: [Repeater-Builder] Antenna question

At 10:07 AM 3/25/2008, you wrote: >Maybe that's what he has, even though he said it wasn't a DB products. But >he said antenna rod, not tubing. Was that particular model made with rod? Chuck - have been told by someone else that it is a Sinclair. I can find no tag or ID on it that tells me that

Re: Re: [Repeater-Builder] DTMF Decoder

At 04:44 AM 03/25/08, you wrote: >Vern, > >I have not used a sound card for DTMF decoding, but the decoder on >the Echolink card (I am assuming for the repeaters you are using >one) I find DTMF decoder problems are almost always level related. Not always >Most decoders work over a reasonably wi

[Repeater-Builder] WANTED: Com-spec TS-64 encoder/decoder

Anyone have a Com-spec TS-64 encoder-decoder module? I'm looking for a couple for a on-going project. Contact off-list with price [EMAIL PROTECTED] . TNX & 73 Dennis - W4DG

Re: [Repeater-Builder] WANTED: Com-spec TS-64 encoder/decoder

Com-spec has all kinds of them. They will be happy to sell them to you just like they sold one to me. On Tue, 25 Mar 2008 21:21:12 - "w4dg.geo" <[EMAIL PROTECTED]> wrote: > Anyone have a Com-spec TS-64 encoder-decoder module? > I'm looking for a > couple for a on-going project. Contact o

[Repeater-Builder] Antenna: what if???

I got 5 db-224a antennas.. What if I: combined 2 of them on one mast with a co-phase harness to make a vhf version of the db-408? Combined 3 bottom harnesses and one top half harness to make my own version of the db-228? Combined the above mentioned harnesses and folded dipoles to make a vhf

Re: Re: [Repeater-Builder] WANTED: Com-spec TS-64 encoder/decoder

Get the TS64DS which has the dip switch. Cost couple $ more, but worth it. AES also carries them. 73, ron, n9ee/r >From: [EMAIL PROTECTED] >Date: 2008/03/25 Tue PM 04:16:06 CST >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] WANTED: Com-spec TS-64 encoder/decoder >

Re: Re: Re: [Repeater-Builder] DTMF Decoder

A 8870 and other DTMF decoders will work over a 10 db range of twist. The levels can be wide apart for the 2 tones are seperated and squared for a period averaging circuit. As for problems being ALMOST level related means not always. The posting should have said "does not have flat audio", sor

[Repeater-Builder] Off Topic, trying not to re-invent the wheel...

Yes, this is off topic, but I thought I'd tap the combined experience of the 3000 plus group members... Over and above helping set up a couple of repeaters, I've been asked to help out a local Red Cross chapter in their Emergency Comm Center. The situation is that they have a number of operators

Re: [Repeater-Builder] DTMF Decoder

I still don't understand why the other program I ran on the same machine with the same sound card and the same connections had no problem decoding. Also my RC1000 has no problems decoding DTMF from the same repeater. Maybe it's just because you built such a fine product that it isn't bothered

Re: [Repeater-Builder] Off Topic, trying not to re-invent the wheel...

Mike, I would recommend all rigs be pre-set in a standard manner. That is in memories set same for various memories such as for VHF put in memory 1 the main freq with all needed. Same for rest of memories. The last thing one needs in an EOC setting is having to learn how to use a rig. Of cou