DTN IQFeed, DTN.IQ, DTN ProphetX Support Forums

Join the 80,000 other DTN customers who enjoy the fastest, most reliable data available. There is no better value than DTN!

(Move your cursor to this area to pause scrolling)

"I was with ******* for 4 years at $230 a month, this is a huge savings for me, GOD BLESS YOU PEOPLE," - Comment from T.S. via Email

"If someone needs the best quality data and backfill beyond what their broker provides at a rate that is the best in the industry, I highly recommend IQFeed." - Comment from Josh via Public Forum

"DTN has never given me problems. It is incredibly stable. In fact I've occasionally lost the data feed from Interactive Brokers, but still been able to trade because I'm getting good data from DTN." - Comment from Leighton

"The people at Nirvana have very nice things to say about your company and I can see why! Price and service is a potent combination." - Comment from Ed

"The service is great, I see a noticeable improvement in my volume profiles over [broker]'s data feed" - Comment from Larry

"Previously I was using *******. IQFeed is WAY more economical, and for my charting needs is just as good, if not better." - Comment from Public Forum Post

"Thank God for your Data Feed as the only Zippers I see are on my pants (LOL), and no more 200 pip spikes to mess up charts." - Comment from Spiro via Email

"I would just like to say that IQFeed version 4 is running very well and I am very happy with its performance. I would also like to extend a big thanks for the fast and efficient help that I always receive. My questions and concerns are always addressed promptly. Way to go!" - Comment from Josh in CO.

"You are either overstaffed or people just don't have problems with your feed because customer support always answers the phone quickly." - Comment from Jay via Email

"I cannot believe what a difference it makes trading with ProphetX!" - Comment from Bruce in Los Angeles

Home

Recent Posts

Information on DTN's Industries:
DTN Oil & Gas | DTN Trading | DTN Agriculture | DTN Weather

DTN.IQ/IQFeed on Twitter
DTN News and Analysis on Twitter

»Forums Index »Archive (2017 and earlier) »DTN Satellite Products »What is the total bandwidth of DTN RT satellite link??

Author	Topic: What is the total bandwidth of DTN RT satellite link?? (5 messages, Page 1 of 1)
chrisk -Interested User- Posts: 6 Joined: Sep 17, 2005	Posted: Sep 17, 2005 10:10 AM Msg. 1 of 5 Does anybody know what is the total bandwidth (in bits/sec) of the DTN satellite link for transmitting all trading data, e.g. trades/quotes for all equities, options, futures, indexes, forex, etc?? That is all trading data less anything like weather info not directly related to trading.
chrisk -Interested User- Posts: 6 Joined: Sep 17, 2005	Posted: Sep 17, 2005 10:14 AM Msg. 2 of 5 Just to clarify, I meant to say the maximum bandwidth and not what is actually transmitted which may depend on a given day or given instance.
David -DTN Evangelist- Posts: 113 Joined: May 7, 2004 I'd rather be...	Posted: Sep 17, 2005 12:13 PM Msg. 3 of 5 FWIW: The DTN receiver has an Ethernet, USB and serial connection - I run the serial connection at 460kb to get the information for a full subscription running in a 'send all' mode. The elimination of the stock options has freed up some bandwidth. I do not know the actual BW or peak rates but I do know if run less than 460kb on the serial link there is packet loss.(1) The bad part is you do not know this is happening because if the queue is full they get discarded receiver side - this shows particularly in getting the morning opens on stocks in the morning. For serial com you need to have a UART with a large buffer (128) to handle the rate so that the UART doesn't overflow. I have not played with USB or the Ethernet but I suspect Ethernet tcp/ip is the way to go especially for a Windows program. For it the connection BW will not be an issue, only the quickness of processing client side. (1) note: based on empirical observation. David *IQXP Software* http://www.iqxp.com LiveWire Update Service PO Box 1417 Fairfield, IA 52556 641-472-8393 http://www.livewire-cablesoft.com/
chrisk -Interested User- Posts: 6 Joined: Sep 17, 2005	Posted: Sep 17, 2005 12:27 PM Msg. 4 of 5 Your 460kb (I assume Kbits/sec) is the speed you saw on your connection between DTN Receiver and your PC. I was asking about the satellite link (between DTN Transmitter in Nebraska to a satellite and down to your DTN Receiver) where DTN uses totally different format using compressing (the data on your serial link is decompressed and in different format). Secondly, DTN sends ALL its DTN RT trading data through its satellite link, and your serial link had only the data you subscribed to. Also, I asked about the maximum capacity of the link and not what you could see at any particular moment.
DTN_Jay_Froscheiser -VP, Product Operations- Posts: 1746 Joined: May 3, 2004 DTN IQFeed/DTN.IQ/DTN NxCore	Posted: Sep 18, 2005 08:13 PM Msg. 5 of 5 Chris, I don't have the exact numbers with me, but it is close the 1mb. This number is somewhat deceptive and I can't really give you a true "only data" bandwidth number however. DTN transmits data over multiple satellite channels which each have a set amount of bandwidth and certain data sets. We then prioritize data on each channel with "virtual channels". Quote data gets the highest priority, so in reality, it could use 100% of the available bandwidth if needed. Hopefully this is what you were looking for. Jay Froscheiser DTN - Trading Markets