SHT-71 cable idea and membrane suggestions?
Archiver
Posts: 46,084
I have to make a cable for an SHT-71 so I can put the sensor in an air duct.
I was reading the Sensirion datasheet section about cabling and it talked
about running Vcc and Gnd between the data and sck lines. I was picturing 4
conductor twisted pair and thinking that wouldn't really fit the bill.
Then it dawned on me. Telephone handset wire! 4 conductors, wires flat and
straight through the insulation so it meets the wiring arrangement
requirement. The spacing of the wires is almost the same as the SHT-71s legs
too! Think this would work? Typical length about 24 inches.
The datasheet also talks about using a membrane to protect the sensor
elements from contamination. Any idea what material this membrane should be?
Found the examples for mounting materials but nothing about the membrane.
I was reading the Sensirion datasheet section about cabling and it talked
about running Vcc and Gnd between the data and sck lines. I was picturing 4
conductor twisted pair and thinking that wouldn't really fit the bill.
Then it dawned on me. Telephone handset wire! 4 conductors, wires flat and
straight through the insulation so it meets the wiring arrangement
requirement. The spacing of the wires is almost the same as the SHT-71s legs
too! Think this would work? Typical length about 24 inches.
The datasheet also talks about using a membrane to protect the sensor
elements from contamination. Any idea what material this membrane should be?
Found the examples for mounting materials but nothing about the membrane.
Comments
I have used regular braided phone cable about 60' to send the data from a
SHT** and it worked fine. Note that the power for the SHT was local, but I
don't see why you couldn't run the power that far too. I ended up using a
433mHz transmitter instead of wire, but it did work just fine.
I used some silk screen to protect the sensor. I tried a 1-2 micron filter
material, but it really slowed down response time.
Jonathan
www.madlabs.info
Original Message
From: "pm" <pmeloy@s...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, July 28, 2003 8:26 PM
Subject: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> I have to make a cable for an SHT-71 so I can put the sensor in an air
duct.
> I was reading the Sensirion datasheet section about cabling and it talked
> about running Vcc and Gnd between the data and sck lines. I was picturing
4
> conductor twisted pair and thinking that wouldn't really fit the bill.
>
> Then it dawned on me. Telephone handset wire! 4 conductors, wires flat and
> straight through the insulation so it meets the wiring arrangement
> requirement. The spacing of the wires is almost the same as the SHT-71s
legs
> too! Think this would work? Typical length about 24 inches.
>
> The datasheet also talks about using a membrane to protect the sensor
> elements from contamination. Any idea what material this membrane should
be?
> Found the examples for mounting materials but nothing about the membrane.
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>elements from contamination. Any idea what material this membrane should be?
>Found the examples for mounting materials but nothing about the membrane.
One possibility is Goretex. It allows water vapor to pass, but not
liquid or dust. The Gore company makes vents specifically for
electronic applications.
You can find goretex at a backpacking equipment supplier, bonded to a
nylon carrier. The carrier would slow down the response, though.
Another possibility is a sintered filter. Mott company has sintered
materials with a hydrophobic coating. The Microswitch HIH3602
humidity sensor in a TO5 can includes one of those in the top of the
can.
Any of these options slow down the response quite a bit. Once
condensatin gets inside, it takes forever to evaporate. The goretex
is probably the best. The Vaisala field humidity probes include a
very delicate membrane like that.
-- Tracy
detect. But if it's pressure, how about using a partially inflated balloon
or condom as a liquid barrier? In the pro-audio business we do this all the
time to protect a microphone when we want to capture sounds in a drippy
cave, etc. A microphone is nothing but a pressure transducer (albeit, a
somewhat expensive one), and we still get frequency response beyond 10 kHz
with this sort of barrier.
Mike Sokol
www.modernrecording.com
mikes@m...
Original Message
From: "Tracy Allen" <tracy@e...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, July 29, 2003 10:55 AM
Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> >The datasheet also talks about using a membrane to protect the sensor
> >elements from contamination. Any idea what material this membrane should
be?
> >Found the examples for mounting materials but nothing about the membrane.
>
> One possibility is Goretex. It allows water vapor to pass, but not
> liquid or dust. The Gore company makes vents specifically for
> electronic applications.
>
> You can find goretex at a backpacking equipment supplier, bonded to a
> nylon carrier. The carrier would slow down the response, though.
>
> Another possibility is a sintered filter. Mott company has sintered
> materials with a hydrophobic coating. The Microswitch HIH3602
> humidity sensor in a TO5 can includes one of those in the top of the
> can.
>
> Any of these options slow down the response quite a bit. Once
> condensatin gets inside, it takes forever to evaporate. The goretex
> is probably the best. The Vaisala field humidity probes include a
> very delicate membrane like that.
>
> -- Tracy
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
little jobbies too! Plug it in, it works! Digital chip, not analog output.
No ADC to fool with, just a two wire interface (not I2C but pretty easy).
Ask it what the temp and humidity is - do a bit of math, you're done!
I made up a prototype on a solderless breadboard and took it to work. Our
refrigeration guy brought along two sling psycrometers and we tried it in
various environments - Ice arena (48F 22% RH), Swimming pool (84F, 69%RH)
Office (72F, 43%RH). Every time the SHT-71 was 0.2F higher and 0.1%RH higher
than the average of the two sling psychrometers. Might have been a tad
closer than that but I rounded to one decimal place in software. Even one
decimal place is really overkill [noparse]:)[/noparse]
Original Message
From: "Mike Sokol - ModernRecording" <mikes@m...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, July 29, 2003 8:17 AM
Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> Just jumping in mid-thread, so I'm not sure exactly what you're trying to
> detect. But if it's pressure, how about using a partially inflated balloon
> or condom as a liquid barrier? In the pro-audio business we do this all
the
> time to protect a microphone when we want to capture sounds in a drippy
> cave, etc. A microphone is nothing but a pressure transducer (albeit, a
> somewhat expensive one), and we still get frequency response beyond 10 kHz
> with this sort of barrier.
>
> Mike Sokol
> www.modernrecording.com
> mikes@m...
>
>
>
Original Message
> From: "Tracy Allen" <tracy@e...>
> To: <basicstamps@yahoogroups.com>
> Sent: Tuesday, July 29, 2003 10:55 AM
> Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
>
>
> > >The datasheet also talks about using a membrane to protect the sensor
> > >elements from contamination. Any idea what material this membrane
should
> be?
> > >Found the examples for mounting materials but nothing about the
membrane.
> >
> > One possibility is Goretex. It allows water vapor to pass, but not
> > liquid or dust. The Gore company makes vents specifically for
> > electronic applications.
> >
> > You can find goretex at a backpacking equipment supplier, bonded to a
> > nylon carrier. The carrier would slow down the response, though.
> >
> > Another possibility is a sintered filter. Mott company has sintered
> > materials with a hydrophobic coating. The Microswitch HIH3602
> > humidity sensor in a TO5 can includes one of those in the top of the
> > can.
> >
> > Any of these options slow down the response quite a bit. Once
> > condensatin gets inside, it takes forever to evaporate. The goretex
> > is probably the best. The Vaisala field humidity probes include a
> > very delicate membrane like that.
> >
> > -- Tracy
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
and
> Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
for drying out, I'm putting the internal heater as a menu item so it can be
turned on to help out if needed.
I'll check out the gortex idea. Think I know where I can get some pretty
easily.
Original Message
From: "Tracy Allen" <tracy@e...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, July 29, 2003 7:55 AM
Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> >The datasheet also talks about using a membrane to protect the sensor
> >elements from contamination. Any idea what material this membrane should
be?
> >Found the examples for mounting materials but nothing about the membrane.
>
> One possibility is Goretex. It allows water vapor to pass, but not
> liquid or dust. The Gore company makes vents specifically for
> electronic applications.
>
> You can find goretex at a backpacking equipment supplier, bonded to a
> nylon carrier. The carrier would slow down the response, though.
>
> Another possibility is a sintered filter. Mott company has sintered
> materials with a hydrophobic coating. The Microswitch HIH3602
> humidity sensor in a TO5 can includes one of those in the top of the
> can.
>
> Any of these options slow down the response quite a bit. Once
> condensatin gets inside, it takes forever to evaporate. The goretex
> is probably the best. The Vaisala field humidity probes include a
> very delicate membrane like that.
>
> -- Tracy
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
braided then. 60' is a LOOOOONG way!
Original Message
From: "Jonathan Peakall" <jpeakall@m...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, July 29, 2003 7:14 AM
Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> PM,
>
> I have used regular braided phone cable about 60' to send the data from a
> SHT** and it worked fine. Note that the power for the SHT was local, but I
> don't see why you couldn't run the power that far too. I ended up using a
> 433mHz transmitter instead of wire, but it did work just fine.
>
> I used some silk screen to protect the sensor. I tried a 1-2 micron filter
> material, but it really slowed down response time.
>
> Jonathan
>
> www.madlabs.info
>
>
Original Message
> From: "pm" <pmeloy@s...>
> To: <basicstamps@yahoogroups.com>
> Sent: Monday, July 28, 2003 8:26 PM
> Subject: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
>
>
> > I have to make a cable for an SHT-71 so I can put the sensor in an air
> duct.
> > I was reading the Sensirion datasheet section about cabling and it
talked
> > about running Vcc and Gnd between the data and sck lines. I was
picturing
> 4
> > conductor twisted pair and thinking that wouldn't really fit the bill.
> >
> > Then it dawned on me. Telephone handset wire! 4 conductors, wires flat
and
> > straight through the insulation so it meets the wiring arrangement
> > requirement. The spacing of the wires is almost the same as the SHT-71s
> legs
> > too! Think this would work? Typical length about 24 inches.
> >
> > The datasheet also talks about using a membrane to protect the sensor
> > elements from contamination. Any idea what material this membrane should
> be?
> > Found the examples for mounting materials but nothing about the
membrane.
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
and
> Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
If response time isn't a big deal, the filter material I tried would be
great. It is easy to use, rigid and tough. I would worry about gortex if
condensation can build up near the sensor. Once goretex gets wet on the
inside, it takes forever to dry out. I'm not knocking the stuff, but it
isn't as great as advertised, in my experience. I own a lot of climbing and
camping gear with Gortex, and that is just what I have seen.
I don't know how you plan on mounting the sensor. I put mine in a waterproof
flashlight, with the sensor where the light bulb usually goes. The filter
material takes the place of the lens. It's a great and cheap package
solution for me, and since I made it wireless I can hang it anywhere. This
unit sat in an exposed location for most of last winter, getting directly
rained on, and is doing great. I don't think the internal heater will be
very effective for combating condensation, depending on how large the cavity
is that houses the SHT. I think it more or less just dries out the sensor.
Jonathan
www.madlabs.info
Original Message
From: "pm" <pmeloy@s...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, July 29, 2003 7:14 PM
Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> Response time isn't really an issue - taking a sample every 30 minutes. As
> for drying out, I'm putting the internal heater as a menu item so it can
be
> turned on to help out if needed.
>
> I'll check out the gortex idea. Think I know where I can get some pretty
> easily.
>
>
Original Message
> From: "Tracy Allen" <tracy@e...>
> To: <basicstamps@yahoogroups.com>
> Sent: Tuesday, July 29, 2003 7:55 AM
> Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
>
>
> > >The datasheet also talks about using a membrane to protect the sensor
> > >elements from contamination. Any idea what material this membrane
should
> be?
> > >Found the examples for mounting materials but nothing about the
membrane.
> >
> > One possibility is Goretex. It allows water vapor to pass, but not
> > liquid or dust. The Gore company makes vents specifically for
> > electronic applications.
> >
> > You can find goretex at a backpacking equipment supplier, bonded to a
> > nylon carrier. The carrier would slow down the response, though.
> >
> > Another possibility is a sintered filter. Mott company has sintered
> > materials with a hydrophobic coating. The Microswitch HIH3602
> > humidity sensor in a TO5 can includes one of those in the top of the
> > can.
> >
> > Any of these options slow down the response quite a bit. Once
> > condensatin gets inside, it takes forever to evaporate. The goretex
> > is probably the best. The Vaisala field humidity probes include a
> > very delicate membrane like that.
> >
> > -- Tracy
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
and
> Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
FWIW, it's amazing to me how much mileage the Gore company has gotten
from its patents on expanded PTFE. Many formulations, many special
applications. The venting and sensor protection products are
described at this URL:
http://www.gore.com/prevent/
I think the speed of drying on the inside depends a lot on the
backing material, but I'm really happy with it for outdoor equipment,
jackets, shoes, hats. I'd rather not be caught on a winter mountain
trip without it!
-- Tracy
>PM,
>
>If response time isn't a big deal, the filter material I tried would be
>great. It is easy to use, rigid and tough. I would worry about gortex if
>condensation can build up near the sensor. Once goretex gets wet on the
>inside, it takes forever to dry out. I'm not knocking the stuff, but it
>isn't as great as advertised, in my experience. I own a lot of climbing and
>camping gear with Gortex, and that is just what I have seen.
>
>I don't know how you plan on mounting the sensor. I put mine in a waterproof
>flashlight, with the sensor where the light bulb usually goes. The filter
>material takes the place of the lens. It's a great and cheap package
>solution for me, and since I made it wireless I can hang it anywhere. This
>unit sat in an exposed location for most of last winter, getting directly
>rained on, and is doing great. I don't think the internal heater will be
>very effective for combating condensation, depending on how large the cavity
>is that houses the SHT. I think it more or less just dries out the sensor.
>
>Jonathan
>
>www.madlabs.info
>
>
Original Message
>From: "pm" <pmeloy@s...>
>To: <basicstamps@yahoogroups.com>
>Sent: Tuesday, July 29, 2003 7:14 PM
>Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
>
>
>> Response time isn't really an issue - taking a sample every 30 minutes. As
>> for drying out, I'm putting the internal heater as a menu item so it can
>be
>> turned on to help out if needed.
>>
>> I'll check out the gortex idea. Think I know where I can get some pretty
>> easily.
>>
>>
Original Message
>> From: "Tracy Allen" <tracy@e...>
>> To: <basicstamps@yahoogroups.com>
>> Sent: Tuesday, July 29, 2003 7:55 AM
>> Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
>>
>>
>> > >The datasheet also talks about using a membrane to protect the sensor
>> > >elements from contamination. Any idea what material this membrane
>should
>> be?
>> > >Found the examples for mounting materials but nothing about the
>membrane.
>> >
>> > One possibility is Goretex. It allows water vapor to pass, but not
>> > liquid or dust. The Gore company makes vents specifically for
>> > electronic applications.
>> >
>> > You can find goretex at a backpacking equipment supplier, bonded to a
>> > nylon carrier. The carrier would slow down the response, though.
> > >
> > > Another possibility is a sintered filter. Mott company has sintered
> > > materials with a hydrophobic coating. The Microswitch HIH3602
> > > humidity sensor in a TO5 can includes one of those in the top of the
>> > can.
>> >
>> > Any of these options slow down the response quite a bit. Once
>> > condensatin gets inside, it takes forever to evaporate. The goretex
>> > is probably the best. The Vaisala field humidity probes include a
>> > very delicate membrane like that.
> > >
> > > -- Tracy
> > >
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@yahoogroups.com
> > > from the same email address that you subscribed. Text in the Subject
>and
> > Body of the message will be ignored.
>> >
>> >
>> > Your use of Yahoo! Groups is subject to
>http://docs.yahoo.com/info/terms/
>> >
>> >
>>
>>
>> To UNSUBSCRIBE, just send mail to:
>> basicstamps-unsubscribe@yahoogroups.com
>> from the same email address that you subscribed. Text in the Subject and
>Body of the message will be ignored.
>>
>>
>> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> >
>>
>>
>
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed. Text in the
>Subject and Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Don't get me wrong. I love goretex too, and have a *lot* of equipment with
it. Even my down sleeping bag has a gortex liner. I igloo camp in the
winter, and it has become 10X more pleasant since goretex came along. And as
you pointed out, backing would have a lot to do with it. Most of my stuff is
heavy duty, so I am sure I have the worst possible backing. But a week of
winter camping, and goretex is overloaded, everthing is wet, and it can't
keep up with perspiration. Of course, this is many times the amount of
moisture that the sensor will ever see.
Still, I think I like the filter material. It is really strong and easy to
work with, and will not slow response as much as the goretex. I have a bunch
of 3" discs of it, if anybody needs some.
Jonathan
www.madlabs.info
Original Message
From: "Tracy Allen" <tracy@e...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, July 30, 2003 11:53 AM
Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> Nice idea, that waterproof flashlight body for mounting the sensor.
>
> FWIW, it's amazing to me how much mileage the Gore company has gotten
> from its patents on expanded PTFE. Many formulations, many special
> applications. The venting and sensor protection products are
> described at this URL:
>
> http://www.gore.com/prevent/
>
> I think the speed of drying on the inside depends a lot on the
> backing material, but I'm really happy with it for outdoor equipment,
> jackets, shoes, hats. I'd rather not be caught on a winter mountain
> trip without it!
>
> -- Tracy
>
>
>
> >PM,
> >
> >If response time isn't a big deal, the filter material I tried would be
> >great. It is easy to use, rigid and tough. I would worry about gortex if
> >condensation can build up near the sensor. Once goretex gets wet on the
> >inside, it takes forever to dry out. I'm not knocking the stuff, but it
> >isn't as great as advertised, in my experience. I own a lot of climbing
and
> >camping gear with Gortex, and that is just what I have seen.
> >
> >I don't know how you plan on mounting the sensor. I put mine in a
waterproof
> >flashlight, with the sensor where the light bulb usually goes. The filter
> >material takes the place of the lens. It's a great and cheap package
> >solution for me, and since I made it wireless I can hang it anywhere.
This
> >unit sat in an exposed location for most of last winter, getting directly
> >rained on, and is doing great. I don't think the internal heater will be
> >very effective for combating condensation, depending on how large the
cavity
> >is that houses the SHT. I think it more or less just dries out the
sensor.
> >
> >Jonathan
> >
> >www.madlabs.info
> >
> >
Original Message
> >From: "pm" <pmeloy@s...>
> >To: <basicstamps@yahoogroups.com>
> >Sent: Tuesday, July 29, 2003 7:14 PM
> >Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> >
> >
> >> Response time isn't really an issue - taking a sample every 30 minutes.
As
> >> for drying out, I'm putting the internal heater as a menu item so it
can
> >be
> >> turned on to help out if needed.
> >>
> >> I'll check out the gortex idea. Think I know where I can get some
pretty
> >> easily.
> >>
> >>
Original Message
> >> From: "Tracy Allen" <tracy@e...>
> >> To: <basicstamps@yahoogroups.com>
> >> Sent: Tuesday, July 29, 2003 7:55 AM
> >> Subject: Re: [noparse][[/noparse]basicstamps] SHT-71 cable idea and membrane suggestions?
> >>
> >>
> >> > >The datasheet also talks about using a membrane to protect the
sensor
> >> > >elements from contamination. Any idea what material this membrane
> >should
> >> be?
> >> > >Found the examples for mounting materials but nothing about the
> >membrane.
> >> >
> >> > One possibility is Goretex. It allows water vapor to pass, but not
> >> > liquid or dust. The Gore company makes vents specifically for
> >> > electronic applications.
> >> >
> >> > You can find goretex at a backpacking equipment supplier, bonded to a
> >> > nylon carrier. The carrier would slow down the response, though.
> > > >
> > > > Another possibility is a sintered filter. Mott company has sintered
> > > > materials with a hydrophobic coating. The Microswitch HIH3602
> > > > humidity sensor in a TO5 can includes one of those in the top of the
> >> > can.
> >> >
> >> > Any of these options slow down the response quite a bit. Once
> >> > condensatin gets inside, it takes forever to evaporate. The goretex
> >> > is probably the best. The Vaisala field humidity probes include a
> >> > very delicate membrane like that.
> > > >
> > > > -- Tracy
> > > >
> > > >
> > > >
> > > > To UNSUBSCRIBE, just send mail to:
> > > > basicstamps-unsubscribe@yahoogroups.com
> > > > from the same email address that you subscribed. Text in the
Subject
> >and
> > > Body of the message will be ignored.
> >> >
> >> >
> >> > Your use of Yahoo! Groups is subject to
> >http://docs.yahoo.com/info/terms/
> >> >
> >> >
> >>
> >>
> >> To UNSUBSCRIBE, just send mail to:
> >> basicstamps-unsubscribe@yahoogroups.com
> >> from the same email address that you subscribed. Text in the Subject
and
> >Body of the message will be ignored.
> >>
> >>
> >> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> > >
> >>
> >>
> >
> >
> >To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> >from the same email address that you subscribed. Text in the
> >Subject and Body of the message will be ignored.
> >
> >
> >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>