Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

donate to eham
   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Kenwood TM-D710GA missing APRS PACKETS  (Read 11777 times)
K8CPA
Member

Posts: 45


WWW

Ignore
« on: July 30, 2017, 11:48:23 AM »

Hi friends,

 I thought I would asked someone in this forum if they know anything about this.

As many of you know I picked up a new radio and it has APRS. Well there's a little bit of a problem with it.

Sometimes this radio does not always decode the APR S packets that I'm hearing on 144. 39 .

It does decode 90% of them. But there have been a few that have come across the frequency that my radio simply do not even acknowlege or decode. I do not know if this is a firmware issue an issue where the TNC cannot hear the packet audio or what is going on.


Anyone know anything about this?

73 Chuck K8CPA



Logged
K8CPA
Member

Posts: 45


WWW

Ignore
« Reply #1 on: July 30, 2017, 11:49:06 AM »

And yes before anyone asks I have everything set up correctly
Logged
VE6MB
Member

Posts: 1




Ignore
« Reply #2 on: July 31, 2017, 02:01:17 PM »

Drop the squelch (raise the volume) on the radio and listen to the audio of these packets? How do they compare to those packets that decode correctly? Do they sound clean and are they of an adequate audio level?  It's possible that the problem isn't with your radio, but rather the transmitting station. Maybe the quality of the packet signals of the remote station are not that great (ie. distorted, noisy, too high or too low audio level, or multipath).

Do you know if the signals you are trying to decode are from mobile vs. fixed stations (like digipeaters)?

Just some thoughts.....

Valentino, VE6MB
Calgary, AB
Logged
K8CPA
Member

Posts: 45


WWW

Ignore
« Reply #3 on: August 01, 2017, 10:55:18 AM »

Drop the squelch (raise the volume) on the radio and listen to the audio of these packets? How do they compare to those packets that decode correctly? Do they sound clean and are they of an adequate audio level?  It's possible that the problem isn't with your radio, but rather the transmitting station. Maybe the quality of the packet signals of the remote station are not that great (ie. distorted, noisy, too high or too low audio level, or multipath).

Do you know if the signals you are trying to decode are from mobile vs. fixed stations (like digipeaters)?

Just some thoughts.....

Valentino, VE6MB
Calgary, AB

You are correct about that, some of them are a bit noisy here. But, what did help here was turning the AIP on, on VHF and also too, in my subband I am using for APRS, (left side) is setting the radio for NFM, as opposed to normal FM. Seems the distant packet are decoded more now than before. It cut down on the noise a bit and made the packets easier to decode. I do have some local noise here on 2 meters, which is interesting, it seems to be QRN. Like from power wires or something around here. comes and goes.

Anyhow, that was my fix here. Smiley

73 de Chuck K8CPA

Logged
WG8Z
Member

Posts: 306




Ignore
« Reply #4 on: August 08, 2017, 07:47:22 PM »

FWIW in the packet circle the 710 is know as an alligator (1200 baud). For whatever reason it seems to be lacking in the ability to decode all but the stronger 1200 baud packets.
Funny thing is the 9600 baud performance is quite good.
I've witnessed this first hand as several have tried to use these on our local 1200 baud packet
network. They just got frustrated and gave up.

73
 Greg
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!