[FADCA] [telpac-paclink] Updated and corrected
wb4kgy at bellsouth.net
wb4kgy at bellsouth.net
Mon Aug 30 00:07:14 EDT 2004
If you havn't seen this it may influence your next radio purchase.
Thanks to Jamey(KD4LXB) for forwarding this to me.
Doug(WB4KGY)
> ----- Original Message -----
> From: k4cjx at comcast.net
> To: Tennessee_Digital_Group ; Telpac-Paclink ; Wl2kemcomm
> Sent: Monday, August 23, 2004 11:16 PM
> Subject: [telpac-paclink] Updated and corrected
>
>
>
>
>
>
> RADIOS AND TNCS FOR USE IN WINLINK 2000 NETWORKING
>
> Radio-TNC9600bInfoC, AUG 24, 2004
>
>
>
> VHF/UHF PACKET RADIOS - EVALUATED AT 9600 BAUD
>
> (Edited from a table provided by Mike Tracy, KC1SX, ARRL Lab, August 20, 2004)
>
> Radio Model / QST Issue
> RX BER
>
> 12 dB SINAD
>
> 2M / 70 cm
> RX BER
>
> 16 dB SINAD
>
> 2M / 70 cm
> RX BER,
>
> -50 dBm
>
> 2M / 70 cm
> TX BER,
>
> 12 dB SINAD
>
> 2M / 70 cm
> TX BER,
>
> SINAD + 30 dB
>
> 2M / 70 cm
>
> ICOM IC-208H
>
> Oct 2003
> 9.0 E-5
>
> 7.7 E-5
> <1.0 E-5
>
> <1.0 E-5
> <1.0 E-5
>
> <1.0 E-5
> 1.3 E-3
>
> 4.5 E-4
> 4.0 E-4
>
> 2.4 E-5
>
> Yaesu FT-7800
>
> Apr 2004
> 1.5 E-3
>
> 1.4 E-3
> 1.4 E-4
>
> 1.0 E-4
> 2.1 E-5
>
> 1.7 E-5
> 4.1 E-3
>
> 1.9 E-3
> 3.5 E-5
>
> <1.0 E-5
>
> Alinco DR-135TP
>
> Jan 2001
> 5.9 E-4
>
> -
> 1.0 E-5
>
> -
> <1.0 E-5
>
> -
> 2.4 E-3
>
> -
> 8.5 E-5
>
> -
>
> Alinco DR-235
>
> Nov 2003
> 3.8 E-3
>
> (223 MHz)
> 1.4 E-4
>
> (223 MHz)
> 2.4 E-5
>
> (223 MHz)
> 2.5 E-3
>
> (223 MHz)
> 3.4 E-4
>
> (223 MHz)
>
> ICOM IC-910H
>
> May 2001 (3 band)
>
> (1.2G)
> 7.4 E-4
>
> 7.1 E-4
>
> 9.4 E-4
> 1.1 E-5
>
> 1.7 E-5
>
> <1.0 E-5
> <1.0 E-5
>
> <1.0 E-5
>
> <1.0 E-5
> 1.5 E-3
>
> 1.6 E-3
>
> 1.7 E-3
> <1.0 E-5
>
> <1.0 E-5
>
> <1.0 E-5
>
> Kenwood TM-D700A
>
> May 2000 (ext. TNC)
> 8.3 E-4
>
> 6.5 E-4
> 2.4 E-5
>
> 3.0 E-5
> <1.0 E-5
>
> <1.0 E-5
> 1.2 E-3
>
> 8.6 E-4
> <1.0 E-5
>
> <1.0 E-5
>
> ICOM IC-2720H
>
> Mar 2003 (sep rcvrs)
> 5.0 E-4
>
> 1.0 E-4
> <1.0 E-5
>
> <1.0 E-5
> <1.0 E-5
>
> <1.0 E-5
> 4.4 E-3
>
> 9.2 E-4
> 1.0 E-3
>
> 2.0 E-4
>
> Kenwood TS-2000
>
> Jul 2001 (hf/vhf/uhf)
> 7.9 E-5
>
> 2.9 E-4
> <1.0 E-5
>
> <1.0 E-5
> <1.0 E-5
>
> <1.0 E-5
> 1.7 E-4
>
> 1.5 E-4
> <1.0 E-5
>
> <1.0 E-5
>
> Icom IC-706 M II G
>
> Jun 1999 (hf/vhf/uhf)
> 2.2E-3
>
> 2.3E-3
> 4.6E-5
>
> 8.4E-5
> <1.0E-5
>
> <1.0E-5
> 4.6E-3
>
> 2.8E-3
> 2.1E-4
>
> 1.9E-4
>
> Yaesu FT-817
>
> Apr 2001 (hf/vhf/uhf)
> 1.7 E-3
>
> 1.3 E-3
> 7.6 E-5
>
> 7.2 E-5
> <1.0 E-5
>
> <1.0 E-5
> 7.7 E-4
>
> 7.5 E-4
> <1.0 E-5
>
> <1.0 E-5
>
> Yaesu FT-857
>
> Aug 2003 (hf/vhf/uhf)
> 2.8 E-3
>
> 3.3 E-3
> 1.4 E-4
>
> 1.5 E-4
> <1.0 E-5
>
> <1.0 E-5
> 7.7 E-4
>
> 8.3 E-4
> <1.0 E-5
>
> <1.0 E-5
>
> Yaesu FT-897
>
> May 2003 (hf/vhf/uhf)
> 1.7 E-3
>
> 2.3 E-3
> 7.0 E-5
>
> 8.0 E-5
> <1.0 E-5
>
> <1.0 E-5
> 1.0 E-3
>
> 8.0 E-4
> <1.0 E-5
>
> <1.0 E-5
>
> Yaesu FT-7100M
>
> Aug 2001
> 2.5 E-3
>
> 1.9 E-3
> 5.6 E-4
>
> 2.5 E-4
> 1.6 E-4
>
> 8.2 E-5
> 2.0 E-2
>
> 3.4 E-2
> 1.4 E-2 (see
>
> 1.7 E-2 review)
>
> Yaesu FT-1500
>
> Jul 2000
> 2.5 E-3
>
> -
> 4.4 E-5
>
> -
> 1.4 E-5
>
> -
> 9.3 E-3
>
> -
> 3.0 E-4
>
> (see note 1)
>
>
> Notes:
>
> 1. The Yaesu FT-1500 is not really suitable for a packet backbone system because the PLL has a key-down instability problem (insufficient settling time allowed before RF output) that can cause problems with nearby repeater systems.
>
>
>
> 2. RX data in red suggests marginal throughput conditions or failure with long packets. Tests conducted with external lab TNC.
>
>
>
> 3. The Bit Error Rate (BER) is the ratio of the number of bits handled in error to the total number of bits transmitted or received in a given test. Thus a BER of 1 E-3 indicates that one out of a thousand bits is likely to fail to pass error free out of 1000 sent. When sending packets of 255 bytes each, this would suggest every packet would contain at least one bit error causing the packet to be rejected. Sufficient safety margin in the radio link should exist to ensure minimal rejected packets in order to maintain the data throughput. Radio FSK performance at 9600b degrades as noise becomes present in the recovered received data as well as from bandpass filter effects at low signal levels. Error rates also depend upon the method used to balance the transmitted bit format in the originating TNC as well as the recovery format used in the receiving TNC. At 9600b data rate the bits are not handled sequentially with audio frequency shift keying as done in 1200 baud applications.
>
>
>
> For more information regarding Bit Error Rate testing and radio evaluation see the QST article "'9600-Ready' Radios: Ready or Not?" Jon Bloom, KE3Z, ARRL Senior Engineer, May 1995 QST Volume 79, Number 5, available via the search engine on http://www.arrl.org, members only.
>
>
>
>
>
> TNCs RECOMMENDED FOR 9600 BAUD OPERATION
>
>
>
> A number of new radios with built-in TNCs have limited buffer size and/or limited computer COM port speed capabilities which may hinder operation on Winlink 2000 or other applications requiring packet lengths greater than 128 bytes at 9600b data rates. Such radios often have provisions for interfacing external TNCs which are recommended for such applications.
>
>
>
> At 1200b most KISS mode TNCs will work with Paclink, Telpac, Airmail, switch and digipeater applications with the use of the AGW Packet Engine..
>
>
>
> TNCs for 9600b:
>
>
>
> KPC-9612, Kantronics
>
> PK-96, AEA
>
> SCS PTC II series with the DSP Packet module (used with PMBO or Airmail)
>
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>
> -----------------------------------------
> Steve Waterman, k4cjx at comcast.net
> Home: 615-665-0952, Cell: 615-300-5296
> http://winlink.org
> -----------------------------------------
>
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