OP indicated that the new connection is fiber (optic), replacing DSL. The transmission technology involved for fiber (for access services, to the home/business/premise) is called PON (for "Passive Optical Network".)
PON was designed with latency (which impacts CW transmit clarity under some circumstances like hand-sent CW) in mind. The speed on the glass fiber is usually (at least) 10 gigabits/second, sliced into time slots that alternate between downstream (to subscriber) and upstream (from subscriber) depending on demand. The size of the data packets and other implementation properties establish access network latency (all bets are off once the consolidated traffic is connected to an internet "backbone", which also is fiber based but uses other transmission/modulation methods.) Suggest OP seek experience of other hams (K4 series is above my pay grade, although I've experimented with hand-sent CW in a remote station setup in the past) that specifically operate a K4 remote setup *on CW*, with *hand sent CW* via fiber internet connection *at both ends*. 73 Dave WB0GAZ [email protected] (QSY'd back to ham radio after a career in telecom including PON network architecture work) On Thursday, October 30, 2025 at 10:12:33 AM MDT, <[email protected]> wrote: Send Elecraft mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://mailman.qth.net/mailman/listinfo/elecraft or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Elecraft digest..." Today's Topics: 1. K1 - KAT1 Tuner WANTED (Jason Stoltenburg) 2. Re: K4/0 questions (Jim Rhodes) 3. Re: K4/0 questions (Jim Brown) 4. K4/0 bandwidth usage (Bob Evans) 5. ?Elecraft email LIST GUIDELINES 2025 (Eric Swartz) 6. Re: K4/0 bandwidth usage (Hisashi T Fujinaka) ---------------------------------------------------------------------- Message: 1 Date: Wed, 29 Oct 2025 11:15:44 -0500 From: Jason Stoltenburg <[email protected]> To: [email protected] Subject: [Elecraft] K1 - KAT1 Tuner WANTED Message-ID: <cafi5etklak8qmqp+2ckxl8ari18eisrugexnlnswlmrhzzf...@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Good morning! I have an Elecraft K1 without a tuner, and I was hoping that someone has a KAT1 ATU in excess to their needs that they would like to sell (give) me. It?s not the end of the world as I can use my T1 tuner, but in the event someone has one ? please reach out to me! Anyone? Thank you & 73 Jason Stoltenburg KD9ZHF Chicago, IL ------------------------------ Message: 2 Date: Wed, 29 Oct 2025 11:58:07 -0500 From: Jim Rhodes <[email protected]> To: eric norris <[email protected]> Cc: [email protected] Subject: Re: [Elecraft] K4/0 questions Message-ID: <calhxr4btx3krj-q_l1qvp5uwtc_c2dbu1lkkptrfsxgaezr...@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" The web page states that it will work over a phone hotspot. The problem of course would be timing delays. If you have a good strong signal in good 5G area it should be fine. Fringe areas maybe not so good. I am waiting for my notice to get one to try. On Wed, Oct 29, 2025 at 8:35?AM eric norris via Elecraft < [email protected]> wrote: > Hi gang, > How much internet speed will be required to operate the K4/0 at each end? > Might it be possible to operate the K4/0 itself from a mobile hotspot in > CW mode, and how do the bandwidth requirements vary by mode? > My apologies if this has been asked before--I didn't think I would be > buying one with my vacation QTH stuck at 3-5Mbps DSL. I wasn't paying much > attention. But now I have fiber there at 300-500Mbps, and the > possibilities are blowing my senile mind... > Thanks and > > 73, > > Eric NF6S > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] -- Jim K0XU [email protected] ------------------------------ Message: 3 Date: Wed, 29 Oct 2025 13:48:15 -0700 From: Jim Brown <[email protected]> To: [email protected] Subject: Re: [Elecraft] K4/0 questions Message-ID: <[email protected]> Content-Type: text/plain; charset=UTF-8; format=flowed On 10/29/2025 9:58 AM, Jim Rhodes via Elecraft wrote: > The web page states that it will work over a phone hotspot. The issue with remote operation is LATENCY -- that is, how long does it take for an instruction to get from our computer to the radio, and how long does it take data to get from the radio to our radio. That's measured in msec, and is determined by the entire path -- our network, the radio's network, and the internet. If the radio is on our own network, only that network is involved. This mostly matters with contesting and DX-chasing, where timing is everything, not much if at all with casual QSOs. For several years, Starlink has been fast enough for major expeditions to be operated remotely from almost anywhere. 73, Jim K9YC ------------------------------ Message: 4 Date: Wed, 29 Oct 2025 18:40:17 -0500 From: Bob Evans <[email protected]> To: [email protected] Subject: [Elecraft] K4/0 bandwidth usage Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8 Eric, I am definitely not the definitive word on this topic but I had the same question because the ISP at my station only has 18MB up and down. I have a K4D and a K4/0 FieldTest unit connecting to servers at the station 60 miles from my home. On receive, the bandwidth consumption indicator in both the K4D client and K4/0 client shows about 1 MB usage and a real tiny number for TX bandwidth. I?ve never looked at the indicator while transmitting but I?ll bet the numbers are just reversed. Panadapter information is not being sent while transmitting, I don?t believe, so bandwidth on TX could be much lower than 1 MB. I think you?ll have plenty of bandwidth unless your security cameras (or other devices) are also on the same ISP. The K4/0 is just a very pretty (and portable) package and firmware is going through intense testing right now to get it ready for general release. It is really amazing. Good luck, Bob K5WA > On Oct 29, 2025, at 11:07?AM, [email protected] wrote: > > paying > much attention.? But now I have fiber there at 300-500Mbps, and the > possibilities are blowing my senile mind... > Thanks and > > 73, > > Eric NF6S ------------------------------ Message: 5 Date: Wed, 29 Oct 2025 18:28:16 -0700 From: Eric Swartz <[email protected]> To: Elecraft list <[email protected]> Subject: [Elecraft] ?Elecraft email LIST GUIDELINES 2025 Message-ID: <CAGe0YDYyXSyaD7goAy=LNPu=-r3notdc+das6ruqyxosp2h...@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Elecraft email LIST GUIDELINES 2025 For those of you who are new to the list or have forgotten our guidelines here is a quick list of things to remember when posting to this list. Please save this for future reference. The most important thing to remember is that this is a hobby - Let's have fun! The PRIMARY purposes of this list are to provide a -polite- respectful and enjoyable forum for discussing Elecraft products, share mods, new ideas, feedback to Elecraft, bugs, experiences using our products, troubleshooting ideas etc. The Elecraft email list server (reflector) is provided primarily to further the discussion of Elecraft products and related items. It serves as a forum for the discussion of both technical and operating topics including product features, construction and debug problems, sharing your enthusiasm and impressions from using our products. Plus, on a limited basis, more general ham radio related topics of interest to our customers. Please -strongly- resist the urge to reply to an OT thread once it has gone to 5+ posts. Once it hits ten posts do not reply at all (go off list if you feel the urge to continue the conversation.) Also, please do not try to always get the 'last word'.. 1. YOU MUST BE SUBSCRIBED to the [Elecraft] list TO POST to it. (This is done to stop advertising spammers from hitting the list.) Any postings sent to [email protected] by addresses different from the exact ones it shows as subscribers will be rejected. This includes alias (forwarded) addresses like [email protected]. If you use an alias to subscribe you must have it as your from: and return address too. Subscribing with [email protected] from your physical address of [email protected] will allow you to receive postings, but your postings to the list will be rejected if their from: and reply to: address does not match your subscribe address.. Go to mailman.qth.net/mailman/listinfo/elecraft to subscribe and to change your list preferences. To unsubscribe or to change your list preferences (digest, no mail on/off etc.), scroll to the bottom of that page and log in with your subscribed email address and the password that was sent to you by email when you subscribed (and sent to you each month). 2.The list server strips all attachments (pictures etc..) to prevent viruses from propagating and to keep the archives at a reasonable size. 3. Top posting is the official standard for this list, and its especially important for those of us who also read our email on smartphones, iPads etc. Scrolling though a long thread before getting to the reply text is difficult on these devices and costs everyone a lot of time. Reading the response first, at the top, is a huge time saver, especially when you have to read hundreds of emails daily as we do here. We really appreciate your adherence to this. Please also delete -all- footers and as much of the prior email text as possible when replying to cut down on overall email size. Please keep the amount of copied text from previous posts to an -ABSOLUTE MINIMUM- in your replies. 4. EMAIL OVERLOAD: If you are overloaded by the volume of individual messages on the list, You can view the daily Elecraft list messages for each month in web format at: mail-archive.com/[email protected]/maillist.html Just click on the messages you are interested in to read. To change your email list options or to subscribe / unsubscribe, go to: mailman.qth.net/mailman/listinfo/elecraft Scroll to the bottom of the page to log into your preferences page and set your mail options to 'no mail' You can also set your Elecraft list email preferences to 'no mail' delivery, which still allows you to post to the list when reading via the digest or mail-archive.com You can also change your subscription to the DIGEST version, which sends you a single compilation each day. 4a. Please make an effort to keep list volume under control by resisting the urge to post a comment on every long discussion thread (CW, Soldering, Poor on-air behaviour etc.) With thousands of list subscribers email volume can quickly get out of control if everyone feels the need to comment. While we do not overly restrict the subject matter on this list, please remember that its primary focus is on Elecraft products, and their use. Many people rely on it for pointers on building, using and troubleshooting their rigs. Other ham Radio topics are OK, but please keep the posts on non-Elecraft topics under control. 4b. *** When emailing about a specific rig or option, please add the rig/option name(s) to the first part of your email subject line. (K1, K2, K3, KX1 etc.) This will be a huge help for those experiencing email overload and will allow automatic filtering based on subject line. Examples: "Subject: [K4] Filter Adjustment" "Subject: [KH1] How to use ped portable?" "Subject: [XG2] Wow! Great signal Generator. Its a big help. 5. *** IMPORTANT - PLEASE KEEP ALL POSTINGS CORDIAL. Restrain the urge to email someone to argue or admonish them about a posting. The last thing we want to do is to scare anyone off the list. Overly aggressive postings, arguments and negative comments about other posters only serve to scare away new potential Elecraft community members. If you disagree with a posting, Waiting overnight before hitting 'send' f requently helps to put things in perspective.. Remember that -everything- you post here is archived and publicly visible for as long as the internet exists. Would you really want your friends, employers, kids etc. reading what you just posted in anger, foolishness, arrogance etc? If you have a complaint about someone or a thread please email it directly to me ( [email protected] ) and I'll address it. Please do not post complaints about other postings to the list. 5a. Do not post publicly or privately asking people to stop a particular thread, no matter how long, off topic or repetitive it gets. Email me instead. I will step in when I feel it is necessary to end a thread. ([email protected]) 5a1. Please exercise restraint in posting when a thread is getting heavily covered. 10-15 posts on one topic in a day is excessive. Please do not vote yay/nay or with 'me too' postings. That only clogs our email in-boxes. 5b. Please do not post any direct attacks or negative comments directed at a list member or other hams/organizations. . Enthusiastic arguments are encouraged, but please keep everything cordial. Members who verbally attack or denigrate another (either via the list or via direct email) may be removed from the list. As the only official list moderator, I tryjump in as necessary to keep everything orderly. I do this off line and occasionally to the list when it is appropriate. Our goal is to keep the Elecraft list a fun, relaxed and informative central clearing house for Elecraft information and enthusiasm. 6. There are -no- stupid questions. Please feel free to post your technical questions and comments to the list. (And absolutely do not criticize posters for their questions either on the list or via direct email.) Elecraft owners are your best source for quick answers (and they NEVER sleep!) If you don't get the answers you need from the list please email us directly at [email protected] , which is our customer service address. We do try to watch the list traffic, but we may not respond to everything immediately and may miss some postings sent to the list or our personal addresses. 7. Please post your experiences with your Elecraft product, DX worked, mountains climbed, park benchs visited, crazy ideas, product ideas and even complaints (yes - we do want to hear them, but please keep it polite . 7a. Commercial postings are allowed if they relate to Elecraft products, QRP, QRO, home-brewing, building etc. and are of interest to this list's membership. Please keep them as short as possible and provide web links to more detailed information. I'll step in if we feel someone is posting too many messages of this type. 7b. Please limit commercial postings to one per month per offering or product area (i.e. Builder for Hire postings, ham radio related products etc.) 8. Also, please -DO NOT USE ALL CAPS- to emphasize words or phrases. This is interpreted as shouting rudely on the internet. If you want to emphasize something, surround it with -dashes-. 9. Send parts requests direct to [email protected], instead of to the list. 10. If you don't get an answer to a question from the list, or by searching the list archives, don't forget to check the Builder's Resource Page at http://www.elecraft.com and our support email address: [email protected] 11. Please note that Wayne, I and our support staff can not read 100% of the emails in real time on this reflector - especially when we are busy at hamfests, ramping up new products in production etc. If you expect us to reply to a posting, and we do not do so, please email us directly or contact our great guys at [email protected] 12. Above all, HAVE FUN!. (Yes, I know that was all CAPS -> Moderator prerogative.. ;-) We hope that this list is both a good technical, operating and Q&A resource, and that it serves as an Elecraft community gathering place. We enjoy reading it every day and it really helps us keep our energy level high so we can continue getting exciting new products out the door to you! 73, Eric WA6HHQ Outside of my official Co. roles: List Moderator, Modulator etc. *elecraft.com <http://elecraft.com>* ------------------------------ Message: 6 Date: Wed, 29 Oct 2025 19:56:50 -0700 (PDT) From: Hisashi T Fujinaka <[email protected]> To: [email protected] Subject: Re: [Elecraft] K4/0 bandwidth usage Message-ID: <[email protected]> Content-Type: text/plain; charset=US-ASCII; format=flowed Just to be pedantic, network speeds are generally measured in bits not bytes. It should probably be Mbps not MB. 18Mbps seems low to me, but I just asked my buddy who switched from DSL to using a cellular modem and he said he rarely saw 1.5Mbps down and 0.5Mbps up. On Wed, 29 Oct 2025, Bob Evans via Elecraft wrote: > Eric, > I am definitely not the definitive word on this topic but I had the same > question because the ISP at my station only has 18MB up and down. I have a > K4D and a K4/0 FieldTest unit connecting to servers at the station 60 miles > from my home. On receive, the bandwidth consumption indicator in both the > K4D client and K4/0 client shows about 1 MB usage and a real tiny number for > TX bandwidth. I?ve never looked at the indicator while transmitting but I?ll > bet the numbers are just reversed. Panadapter information is not being sent > while transmitting, I don?t believe, so bandwidth on TX could be much lower > than 1 MB. I think you?ll have plenty of bandwidth unless your security > cameras (or other devices) are also on the same ISP. The K4/0 is just a very > pretty (and portable) package and firmware is going through intense testing > right now to get it ready for general release. It is really amazing. > > Good luck, > > Bob K5WA > >> On Oct 29, 2025, at 11:07?AM, [email protected] wrote: >> >> paying >> much attention.? But now I have fiber there at 300-500Mbps, and the >> possibilities are blowing my senile mind... >> Thanks and >> >> 73, >> >> Eric NF6S -- Hisashi T Fujinaka - [email protected] BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee ------------------------------ _______________________________________________ Elecraft mailing list Post to: [email protected] http://mailman.qth.net/mailman/listinfo/elecraft You must be a subscriber to post. Elecraft web page: http://www.elecraft.com End of Elecraft Digest, Vol 258, Issue 27 ***************************************** ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
