Date   

TMD700A Audio Problem

W6RSJ <w6rsj@...>
 

Hello to the group

I have two TMD700A's and have noticed via station reports that my
transmitted audio is not as good as with my two TMV7a's. Sure enuf people
could tell which radio I was on by the quality of the audio.

Now I have heard that people were having this problem during cross band
repeat. But according to the signal reports my audio is fine during cross
band repeating, just poor using the mic. I have connected the v7a mikes to
the d700a and the problem stays with the radio.

Comments? Suggestions?

Richard Jellicoe
W6RSJ


It works - new cable fixed it.

mfernand@...
 

Hi all.

MIC extension is now functional. Replaced the "new" cable. Went to a
shorter cable (8FT instead of 12FT). I don't think it was the length.
I think it was the cable.

Took the defective cable to "Blisto-pack Heaven" and got a refund.
Now my VCR is on the fritz! Go figure!

73

Thanks all.

N2ITR

Manny Fernandez


Re: TMD700A Mic Extension - Not working - Help!!!

Eric J Foster <ke1lb@...>
 

I use two lengths of cable and two Rat Shack connectors with no
problems......

Bob Snyder wrote:

--- In TMD700A@y..., mfernand@t... wrote:
Hello.

I left a msg back on 4/17. I bought a 12 ft. cable from RS and
their
network cable (RJ-45 to RJ-45) connector. First, let me say, I
researched in the manual re: their factory kit. The kit drawing
indicates the cable(s) are 4 meters long. If I did my math correct
that would be approx (4 times 3) feet (or 12 ft.) of cable. You can
use two kits "back to back" which would make a possible cable
length
of 24ft.
Are you using one Radio Shack connector or two? I tried using a Radio
Shack RJ45 connector, and I believe it has a crossover in it for some
reason I can't fathom, and it would cause my D700 to key up as soon
as I plug in the microphone.

I ended up getting a "true" Cat 5 RJ45 connector at CompUSA, and that
mostly works, but the connection is so loose both to the network
cable I use to connect to the radio and to the microphone that the
mike intermittently looses power, and also will sometimes key up
briefly on it's own. :-(

Bob N2KGO


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Re: TMD700A Mic Extension - Not working - Help!!!

Bob Snyder
 

--- In TMD700A@y..., mfernand@t... wrote:
Hello.

I left a msg back on 4/17. I bought a 12 ft. cable from RS and
their
network cable (RJ-45 to RJ-45) connector. First, let me say, I
researched in the manual re: their factory kit. The kit drawing
indicates the cable(s) are 4 meters long. If I did my math correct
that would be approx (4 times 3) feet (or 12 ft.) of cable. You can
use two kits "back to back" which would make a possible cable
length
of 24ft.
Are you using one Radio Shack connector or two? I tried using a Radio
Shack RJ45 connector, and I believe it has a crossover in it for some
reason I can't fathom, and it would cause my D700 to key up as soon
as I plug in the microphone.

I ended up getting a "true" Cat 5 RJ45 connector at CompUSA, and that
mostly works, but the connection is so loose both to the network
cable I use to connect to the radio and to the microphone that the
mike intermittently looses power, and also will sometimes key up
briefly on it's own. :-(

Bob N2KGO


Thanks - checked the switch.

mfernand@...
 

Thanks for the input.

I did check the switch. I sort of thought the switch only locks out
the up/down and DTMF keys. The PTT should still work. I'll re-check
the manual. I didn't see anyone using a cable much longer than 6ft.
I'll try using a shorter cable (another $5???). If dat don't work, I
give up. I'll go the $70. I NEED to extend the cable. Man! Could it
be too much voltage dropped or signal loss in that length of cable?

BTW- Anybody know what signaling is used between the MIC and the main
unit? Jus curious. Too bad they didn't use some sort of ISDN link or
balanced transmission technology. That would have extended the cable
capability substantially I believe. I always believed, when designing
a consumer product, you set your spec way above what would normally
be required in actual use (make it robust). Then publish lower
numbers. That way, if anyone tried something beyond the published
spec, the equipment would still perform to customer satisfaction. Ah
for the "old days"! Oh, also should mean less support costs to the
manufacturer, right?

Hey all! Thanks for the reponses and assist. I DO appreciate it.

73
N2ITR
Manny


Re: Head unit extension cable

Jeff kb2wqm <kb2wqm@...>
 

Good morning Tim. You can find the smaller one, commonly called a headset
type RJ at Home Depot.

73 Jeff kb2wqm

----- Original Message -----
From: "Tim Ploughe" <tjp@...>
To: <TMD700A@...>
Sent: Thursday, April 26, 2001 1:21 AM
Subject: [TMD700A] Head unit extension cable



Hello to the group,

Is making a face unit extension cable as simple as using 4-wire phone line
and the proper jacks? I think the larger end is RJ-11 does anyone know
what the smaller plug is - the one that goes into the head of the D700? I
could not find the smaller plug at Radio Shack.

I wish it was as simple as the mic extension. I really need to make a
cable
for inside the house.

Thanks in advance,

-Tim



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TM-700E Control Software

Phil Manning <g1lkj@...>
 

Downloaded the Control software from www.kenwood.com yesterday
evening and very nice, should make reprogramming a lot easier.

I suppose most new rigs provided they are suitable for data modes
will now have a serial port as standard for this, or perhaps all new
rigs will have one?

Phil.


Head unit extension cable

Tim Ploughe <tjp@...>
 

Hello to the group,

Is making a face unit extension cable as simple as using 4-wire phone line and the proper jacks? I think the larger end is RJ-11 does anyone know what the smaller plug is - the one that goes into the head of the D700? I could not find the smaller plug at Radio Shack.

I wish it was as simple as the mic extension. I really need to make a cable for inside the house.

Thanks in advance,

-Tim


Re: TMD700A Mic Extension - Not working - Help!!!

Eric J Foster <ke1lb@...>
 

Only way I could get the RS cables to work was to run two cables with a
connector in the middle. Something about the crossover......

mfernand@... wrote:

Hello.

I left a msg back on 4/17. I bought a 12 ft. cable from RS and their
network cable (RJ-45 to RJ-45) connector. First, let me say, I
researched in the manual re: their factory kit. The kit drawing
indicates the cable(s) are 4 meters long. If I did my math correct
that would be approx (4 times 3) feet (or 12 ft.) of cable. You can
use two kits "back to back" which would make a possible cable length
of 24ft.

I went to RS, bought the cables and hooked it up outside the store to
test it. It worked! I took it home, pulled the carpet trim out,
routed the cable under the carpet to a location under the dash and
tie-wrapped. Plugged everything in as before. No workie! I can't
figure it out. I've got light at the mic buttons. The connections are
solid (best as I can tell). But no PTT. Again, it worked in front of
the store (un-installed - cable just coiled on the floor). Used it
all the way home. Too wild!

Any thoughts? Has anyone had problems with PTT with the "home-made"
extension cable? What fixed it?

Thanks.

Manny Fernandez


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Re: THD 700 + Garmin GPS III +

Eric J Foster <ke1lb@...>
 

I run the radio and gps with the normal wiring. I run a single wire of
12v (or whatever the gps needs) to the plug of the gps and let it share
the ground from the tm-d700.....

derek.peters@... wrote:

Hi I would like to run the two units in the car without a laptop!

So what is the best way to power the GPS from the car battery and
connect the radio to GPS for data.

I have found the data and power cable that Garmin do but it will not
drop the 12 Volts to the 6 Volts for the GPS.

Any setup advice welcome!

Regards
Derek


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Re: THD 700 + Garmin GPS III +

ik7565@...
 

No problem running your Garmin III+ off the cigarette lighter directly -
use the cable that comes with the TM-D700 and wire it with a Radio Shack
cigarette lighter plug and a pfranc plug. Works great.

73 de N8IK
Ian



derek.peters@... wrote:


Hi I would like to run the two units in the car without a laptop!

So what is the best way to power the GPS from the car battery and
connect the radio to GPS for data.

I have found the data and power cable that Garmin do but it will not
drop the 12 Volts to the 6 Volts for the GPS.

Any setup advice welcome!

Regards
Derek


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Re: THD 700 + Garmin GPS III +

WO1V@...
 

In a message dated 2001-04-25 14:54:38 MST, derek.peters@... writes:


Hi I would like to run the two units in the car without a laptop!

So what is the best way to power the GPS from the car battery and
connect the radio to GPS for data.

I have found the data and power cable that Garmin do but it will not
drop the 12 Volts to the 6 Volts for the GPS.

Any setup advice welcome!

Regards
Derek
HI!

I'm using the standard Garmin cable (pwr n data combo), never worried about
voltage conversion (12 to 6 or whatever...) and it has been sitting on my
dash for weeks, powered up 24/7: no problem so far...

Hope this helps.

Christian D
wo1v@...


TMD700A Mic Extension - Not working - Help!!!

mfernand@...
 

Hello.

I left a msg back on 4/17. I bought a 12 ft. cable from RS and their
network cable (RJ-45 to RJ-45) connector. First, let me say, I
researched in the manual re: their factory kit. The kit drawing
indicates the cable(s) are 4 meters long. If I did my math correct
that would be approx (4 times 3) feet (or 12 ft.) of cable. You can
use two kits "back to back" which would make a possible cable length
of 24ft.

I went to RS, bought the cables and hooked it up outside the store to
test it. It worked! I took it home, pulled the carpet trim out,
routed the cable under the carpet to a location under the dash and
tie-wrapped. Plugged everything in as before. No workie! I can't
figure it out. I've got light at the mic buttons. The connections are
solid (best as I can tell). But no PTT. Again, it worked in front of
the store (un-installed - cable just coiled on the floor). Used it
all the way home. Too wild!

Any thoughts? Has anyone had problems with PTT with the "home-made"
extension cable? What fixed it?

Thanks.

Manny Fernandez


Re: TMD700A Mic Extension - Not working - Help!!!

Mark Turner <mark@...>
 

mfernand@... wrote:
tie-wrapped. Plugged everything in as before. No workie! I can't
figure it out. I've got light at the mic buttons. The connections are
solid (best as I can tell). But no PTT
I don't remember the exact details but I think when I had a similar problem I'd accidentally changed the lock switch on the back of the microphone.

Cheers, Mark.


THD 700 + Garmin GPS III +

derek.peters@...
 

Hi I would like to run the two units in the car without a laptop!

So what is the best way to power the GPS from the car battery and
connect the radio to GPS for data.

I have found the data and power cable that Garmin do but it will not
drop the 12 Volts to the 6 Volts for the GPS.

Any setup advice welcome!

Regards
Derek


Re: Front end interference on the TM-D700E?

Phil Manning <g1lkj@...>
 

Since the manufacture of modern radios using SMD technology and
trying to cram as much as possible in to as small as space as
possible intermod problems have been around. An Yaesu FT847 used on
board HMS Belfast GB2RN suffers chronic breakthough on 2m from the
pagers on Guy's Hospital Tower at London Bridge, whereas a older
FT726R seems to be less susceptable used in the same room.

I had a Icom tribander handy recently when used on 2m in a local park
was swamped by pagers and pmr equipment and I disposed of it in
favour of a older two band Yaesu FT51R radio which gets a bit but not
as bad.

In the case of the TM-D700E I do not use the 2m side for VHF phone
but data only and that is why I bought the rig. For voice ops I have
other older model radio's.

As I said in my earlier comment I do not have a problem with 2m
intermod because I use it for Data only.

I found out how to correct the time problem press REV+LOW and switch
on, rather then disconnecting the lithium battery lead and I like the
radio very much, except for the microphone which I do not like but
that is a purely personal preference. it does not effect the ops.

I have not tried any of it's other ops yet SSTV and Pac Sats, doppler
shift and 5Kz working so I am told could be a problem.

Thanks for all the replies by the way from the US and the UK. My
friend is taking note.

Phil Manning G1LKJ
Surrey Raynet


Re: Front end interference on the TM-D700E?

Rick Giguere <rick@...>
 

Anyone have a URL or other information on the PAR filters?


Thanks!


...Rick

On Mon, 23 Apr 2001 k5qq@... wrote:

In a message dated 4/23/2001 6:30:48 AM Mountain Daylight Time,
g1lkj@... writes:

A friend of mine bought a 700E at the weekend and it seems to be
somewhat susceptible to this. AIP is set to off, putting it on acts
as a 10dB attenuator or so it seems.

Does setting AIP ON prevent the problem?

Unless you are working weak signal simplex operations, the decrease in gain
vs the increase in intercept point should help your problem without causing
any decrease in performance from local repeaters.

Another person wrote in to comment on the Par notch filters and I can attest
to the outstanding results they provide for earlier radios's where the AIP
feature is not available. As a series notch, they provide no problem to
dual band amateur operations but sure get rid of the annoying 152 MHz pagers.

Jim K5QQ


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Re: Front end interference on the TM-D700E?

Rick Giguere <rick@...>
 

Yep. I have the same problem all the time.

I really love the rig, but confess that it's all but useless when I'm in
Boston proper.

The thing is incredibly bad at handling intermod .... I have three other
mobile rigs, and none is this bad ... actually none of my HTs is as bad!


....Rick

On Mon, 23 Apr 2001, Phil Manning wrote:

Anybody had problems with their 700E or 700A when in close proximity
to paging systems ( 154Mhz )etc on VHF and also breakthrough on UHF?

A friend of mine bought a 700E at the weekend and it seems to be
somewhat susceptible to this. AIP is set to off, putting it on acts
as a 10dB attenuator or so it seems.

I have one but do not use mine in a RF interference area as a base
radio. So I have no complaint.

Phil Manning G1LKJ ( in the UK ).



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Re: Front end interference on the TM-D700E?

Gregor <link@...>
 

http://www.parelectronics.com/

I did buy 2 filters, they work realy well. I had bad problems here in Houston.

Good luck, the par filter will probably fix it

Gregory

At 05:17 PM 4/23/01 -0400, you wrote:
Anyone have a URL or other information on the PAR filters?


Thanks!


...Rick



On Mon, 23 Apr 2001 k5qq@... wrote:

In a message dated 4/23/2001 6:30:48 AM Mountain Daylight Time,
g1lkj@... writes:

A friend of mine bought a 700E at the weekend and it seems to be
somewhat susceptible to this. AIP is set to off, putting it on acts
as a 10dB attenuator or so it seems.

Does setting AIP ON prevent the problem?

Unless you are working weak signal simplex operations, the decrease in
gain
vs the increase in intercept point should help your problem without
causing
any decrease in performance from local repeaters.

Another person wrote in to comment on the Par notch filters and I can
attest
to the outstanding results they provide for earlier radios's where the AIP
feature is not available. As a series notch, they provide no problem to
dual band amateur operations but sure get rid of the annoying 152 MHz
pagers.

Jim K5QQ


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Re: Front end interference on the TM-D700E?

Jim Andrews <jim@...>
 

Surrey RAYNET made careful technical investigation into this
problem some years ago and as I wrote a piece about for Radcom,
I suppose that would have been 18 months or more back.
Leicester RAYNET have also used the DCI filters mentioned, purchased from
Waters & Stanton.

They are pretty-well guaranteed to stop all paging / PMR interference and
have proved very effective, including in a control room with no less than 12
other PMR radios (mobile sets) being used on the same mast as our aerial and
coax (all 150-160Mhz area) and not a peep of interference!

Radio used in this instance was a TM-732, probably the worst of all the
Kenwood 'wide' front end sets, with no advanced AIP control.



Jim, G1HUL


-----Original Message-----
From: Phil Manning [mailto:g1lkj@...]
Sent: Monday, April 23, 2001 1:27 PM
To: TMD700A@...
Subject: [TMD700A] Front end interference on the TM-D700E?

Anybody had problems with their 700E or 700A when in close proximity
to paging systems ( 154Mhz )etc on VHF and also breakthrough on UHF?

A friend of mine bought a 700E at the weekend and it seems to be
somewhat susceptible to this. AIP is set to off, putting it on acts
as a 10dB attenuator or so it seems.

I have one but do not use mine in a RF interference area as a base
radio. So I have no complaint.

Phil Manning G1LKJ ( in the UK ).