You writes:


It is attached to a 30 ft RG58U coax cable that runs back to a TNC-
to-FME adapter, then to the Sierra card.

Only a Dufus, would expect to get ANY signal down 30Ft of RG-58U at those
Frequencies......

I would be more polite but would say 30 ft of RG-58 is an excellent
dummy load at 1900...

--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

David Lesher writes:

You writes:


It is attached to a 30 ft RG58U coax cable that runs back to a TNC-
to-FME adapter, then to the Sierra card.

Only a Dufus, would expect to get ANY signal down 30Ft of RG-58U at those
Frequencies......

I would be more polite but would say 30 ft of RG-58 is an excellent
dummy load at 1900...

Indeed.

But nonetheless, an el cheapo yagi for 900 MHz GSM with 10 m of RG-58
boosted the indication on my phone from no bars to all 5 bars. The
yagi sees more signal because it is higher up. The yagi gain is
probably just a but more than cable + connector loss. And it looks
like the built in antenna in the phone has a significant negative
gain.

Around here, marginal areas mostly have 900 MHz. So if you need an
external antenna at all, you probably need one for 900.

OP: There has to be something wrong with your antenna system.

73
Jon

On Jul 17, 4:44 am, LA4RT Jon Kåre Hellan wrote:
David Lesher writes:
You writes:

It is attached to a 30 ft RG58U coax cable that runs back to a TNC-
to-FME adapter, then to the Sierra card.

Only a Dufus, would expect to get ANY signal down 30Ft of RG-58U at those
Frequencies......

I would be more polite but would say 30 ft of RG-58 is an excellent
dummy load at 1900...

Indeed.

But nonetheless, an el cheapo yagi for 900 MHz GSM with 10 m of RG-58
boosted the indication on my phone from no bars to all 5 bars. The
yagi sees more signal because it is higher up. The yagi gain is
probably just a but more than cable + connector loss. And it looks
like the built in antenna in the phone has a significant negative
gain.

Around here, marginal areas mostly have 900 MHz. So if you need an
external antenna at all, you probably need one for 900.

OP: There has to be something wrong with your antenna system.

73
Jon

Thanks for the reply. When you say 900 MHz, what frequency range
should I look for, for an antenna? For instance, the one I have now
claims it covers 824-896Mhz, so apparently it doesn't cover 900?

Thank you!
--
Chris

szilagyic writes:

On Jul 17, 4:44 am, LA4RT Jon KÃ¥re Hellan wrote:
Around here, marginal areas mostly have 900 MHz. So if you need an
external antenna at all, you probably need one for 900.

OP: There has to be something wrong with your antenna system.

73
Jon

Thanks for the reply. When you say 900 MHz, what frequency range
should I look for, for an antenna? For instance, the one I have now
claims it covers 824-896Mhz, so apparently it doesn't cover 900?

Sorry, I wasn't clear enough. And come to think of it, I probably made
some unwarranted assumptions. I'm in Europe. Cell phones here use the
900 MHz band and the 1800 MHz band. All phones are GSM. I believe you
are in the U.S., where there's both GSM, CDMA and some analog, and
frequencies are different. In the U.S., GSM uses the 800 MHz and 1900
MHz bands, and I would expect CDMA to use the same bands.

In the U.S., rural areas are typically covered by 800 MHz networks, as
you want lower frequencies for larger cells. But you'll have to check
if this is actually the case for you. If it is, your antenna is cut
for the right frequency, but there seems to be something wrong with it.

Good luck
Jon

On Jul 17, 4:44 am, LA4RT Jon Kåre Hellan wrote:
David Lesher writes:
You writes:

It is attached to a 30 ft RG58U coax cable that runs back to a TNC-
to-FME adapter, then to the Sierra card.

Only a Dufus, would expect to get ANY signal down 30Ft of RG-58U at those
Frequencies......

I would be more polite but would say 30 ft of RG-58 is an excellent
dummy load at 1900...

Indeed.

But nonetheless, an el cheapo yagi for 900 MHz GSM with 10 m of RG-58
boosted the indication on my phone from no bars to all 5 bars. The
yagi sees more signal because it is higher up. The yagi gain is
probably just a but more than cable + connector loss. And it looks
like the built in antenna in the phone has a significant negative
gain.

Around here, marginal areas mostly have 900 MHz. So if you need an
external antenna at all, you probably need one for 900.

OP: There has to be something wrong with your antenna system.

73
Jon

Hello and thank you for the reply. I had asked around in the groups
originally

(http://groups.google.com/group/alt.c...ar/browse_frm/
thread/3f05f40902745b5/a91191a5bd3d3eb1?lnk=st&q=chris%40groupinfo.com
+frequencies&rnum=12#a91191a5bd3d3eb1)

and was told the frequencies were 800 MHz and 1900 MHz, so this is why
I chose this antenna. For 900 MHz, what frequency range should an
antenna cover to make sure it would work? I will do some more
checking to see if this might be our problem.

Thank you!

On Jul 17, 4:44 am, LA4RT Jon Kåre Hellan wrote:
David Lesher writes:
You writes:

It is attached to a 30 ft RG58U coax cable that runs back to a TNC-
to-FME adapter, then to the Sierra card.

Only a Dufus, would expect to get ANY signal down 30Ft of RG-58U at those
Frequencies......

I would be more polite but would say 30 ft of RG-58 is an excellent
dummy load at 1900...

Indeed.

But nonetheless, an el cheapo yagi for 900 MHz GSM with 10 m of RG-58
boosted the indication on my phone from no bars to all 5 bars. The
yagi sees more signal because it is higher up. The yagi gain is
probably just a but more than cable + connector loss. And it looks
like the built in antenna in the phone has a significant negative
gain.

Around here, marginal areas mostly have 900 MHz. So if you need an
external antenna at all, you probably need one for 900.

OP: There has to be something wrong with your antenna system.

73
Jon

Thanks for the reply. I did not realize that RG-58 has that much
loss. I have read up and see that LMR-400 is a good alternative. I
will be trying that soon and will post the results.

Thank you!!
--
Chris