Date   

locked Re: low freq tones problem with Icom 706 #decode #transmit #txaudio #bluetooth

 

Using the Hold Tx Freq feature and picking a freq above 400 Hz in a quiet area has solved my problem. Also seems to help me in pileup situations. Thanks for the replies. I apparently can't use split or fake it because I am not controlling the radio with WSJT-X. I will be attempting to set up control when a cable on order arrives.


locked Re: How best to use frequency cursors?? #TechnicalHelpQuestion

Gwen
 

Shouldn't matter whether the cursors match the desired station. If the waterfall display is red, it is actually better that your cursor not be on that frequency.  Your transmission (red/top cursor) is probably more likely to get thru if it is on a "dead/deep blue" portion of the waterfall.  Yes, every transmission displayed in the left hand log box is on the waterfall.
RE: first portion -- if the signal you are attempting is weak (in a blue waterfall display), you are more likely to make contact if your transmit cursor matches his --- but if the stream is red, move your transmitter to a bluer section of the waterfall.
Gwen    KI5PXQ

On 1/26/22 8:59 AM, Michael Black via groups.io wrote:
It seems most people are using "Hold Tx" to keep their transmit offset the same -- not caring who/where the receiver is.This is working them split in the classical sense.  You can work them on their frequency but you may collide with others doing that.
Mike W9MDB


On Wednesday, January 26, 2022, 09:36:46 AM CST, scot mackeil <jsmackeil@...> wrote:
So, I am a new WSJT user. I can transmit decode and exchange.  Please tell me best way to use red and green freq cursors?  In log on left contacts have numbers that seem to match numbers in waterfall.  How does one use this info and match cursors to station one wants to exchange with?  Should cursors be over under each other? Or should there always be a spilt? If so what? Should cursors be put over data streams going down the waterfall ?  In log on left how does one know witch stream they are in waterfall? QSL de N1JSM. Ty









locked Re: Answering FTx CQ with Tx2-message #QSO_practices

Roger
 

On 26/01/2022 15:28, Carlos wrote:
.... locator in
Tx 1 I do not log these QSOs as I >regard them as incomplete.
OK, well, its up to you Roger....
And, do the other station know, that you did not log the QSO ?
Is for you the missing locator a reason for a faulty QSO ???
73, Karl OE3JAG
Normally there is no requirement to log any QSO in the UK so there should be no expectation any QSO will be logged.

I usually ignore calls without a grid but the odd one creeps through.

I like to collect the grid of stations I work so a QSO without without a grid is useless to me.

73
Roger
G4HZA

Am 26.01.22, 13:40 schrieb Roger <groups@...>:

On 26/01/2022 12:22, Chuck - KY4CU wrote:
It's fairly standard to use this method to move things along. It's
mentioned in 10.5 of the user's guide:

In some circumstances it may be desirable to make your QSOs as short as
possible. To configure the program to start contacts with message #2,
disable message #1 by double-clicking its radio-button in the Next column
or Tx 1 button in the Now column. Similarly, to send RR73 rather than RRR
for message #4, double-click one of its buttons.

Unless they have a complex call which prevents sending their locator in
Tx 1 I do not log these QSOs as I regard them as incomplete.

73
Roger
GW4HZA






locked Re: Radio initialization CAT commands #EnhancementReqest #Cat_RigControl

 

Dave did you read the thread?

--
John P.
WA2FZW


locked Re: How best to use frequency cursors?? #TechnicalHelpQuestion

Michael Black
 

It seems most people are using "Hold Tx" to keep their transmit offset the same -- not caring who/where the receiver is.This is working them split in the classical sense.  You can work them on their frequency but you may collide with others doing that.
Mike W9MDB

On Wednesday, January 26, 2022, 09:36:46 AM CST, scot mackeil <jsmackeil@...> wrote:

So, I am a new WSJT user. I can transmit decode and exchange.  Please tell me best way to use red and green freq cursors?  In log on left contacts have numbers that seem to match numbers in waterfall.  How does one use this info and match cursors to station one wants to exchange with?  Should cursors be over under each other? Or should there always be a spilt? If so what? Should cursors be put over data streams going down the waterfall ?  In log on left how does one know witch stream they are in waterfall? QSL de N1JSM. Ty


locked Re: Answering FTx CQ with Tx2-message #QSO_practices

Carlos
 

.... locator in
Tx 1 I do not log these QSOs as I >regard them as incomplete.
OK, well, its up to you Roger....
And, do the other station know, that you did not log the QSO ?
Is for you the missing locator a reason for a faulty QSO ???
73, Karl OE3JAG
Am 26.01.22, 13:40 schrieb Roger <groups@...>:

On 26/01/2022 12:22, Chuck - KY4CU wrote:
It's fairly standard to use this method to move things along. It's
mentioned in 10.5 of the user's guide:

In some circumstances it may be desirable to make your QSOs as short as
possible. To configure the program to start contacts with message #2,
disable message #1 by double-clicking its radio-button in the Next column
or Tx 1 button in the Now column. Similarly, to send RR73 rather than RRR
for message #4, double-click one of its buttons.

Unless they have a complex call which prevents sending their locator in
Tx 1 I do not log these QSOs as I regard them as incomplete.

73
Roger
GW4HZA






locked How best to use frequency cursors?? #TechnicalHelpQuestion

scot mackeil
 

So, I am a new WSJT user. I can transmit decode and exchange. Please tell me best way to use red and green freq cursors? In log on left contacts have numbers that seem to match numbers in waterfall. How does one use this info and match cursors to station one wants to exchange with? Should cursors be over under each other? Or should there always be a spilt? If so what? Should cursors be put over data streams going down the waterfall ? In log on left how does one know witch stream they are in waterfall? QSL de N1JSM. Ty


locked Re: Consequences of mistimed computer clock #TechnicalHelpQuestion

neil_zampella
 

FWIW .... time sync is actually part of the 'System Requirements' as
listed in the WSJT-X User Guide :
https://www.physics.princeton.edu/pulsar/k1jt/wsjtx-doc/wsjtx-main-2.5.4.html#SYSREQ

The guide is a good read and has a lot of good info such as this.

Neil, KN3ILZ

On 1/26/2022 8:28 AM, lmeeny wrote:
Reino,

Thank you for the informative reply. That the beginning of the transmitted message is truncated from the front and error correction time window is new info for me. The various "FT" modes are impressively robust!

73,

Ed




locked Re: Radio initialization CAT commands #EnhancementReqest #Cat_RigControl

Dave Garber
 

have you tried using the configurations tab to set up multi settings. I
use 7

Dave Garber
VE3WEJ / VE3IE

On Tue, Jan 25, 2022 at 8:19 PM John P <j.m.price@...> wrote:

Thanks Mike, but that really isn't a solution to my request. I have 5
(maybe 6 without being at the radio) WSJT-X "Configurations" set up for
various digital modes on my IC-9700. I routinely switch configurations
during an operating session. For example I might go back and forth from
"MSK144" to "FT8" or back and forth from "EME-Q65" to "EME-JT65". Having to
shut down WSJT and restart it would be more of a PITA than pressing a few
buttons on the tough screen!

Giving the WSJT program proper the ability to send a string of commands
(ala DxCommander) would cause the commands to be sent whenever one changes
configurations.

--
John P.
WA2FZW






locked Re: Consequences of mistimed computer clock #TechnicalHelpQuestion

lmeeny
 

Reino,

Thank you for the informative reply. That the beginning of the transmitted message is truncated from the front and error correction time window is new info for me. The various "FT" modes are impressively robust!

73,

Ed


locked Re: Answering FTx CQ with Tx2-message #QSO_practices

Roger
 

On 26/01/2022 12:22, Chuck - KY4CU wrote:
It's fairly standard to use this method to move things along. It's mentioned in 10.5 of the user's guide:
In some circumstances it may be desirable to make your QSOs as short as possible. To configure the program to start contacts with message #2, disable message #1 by double-clicking its radio-button in the Next column or Tx 1 button in the Now column. Similarly, to send RR73 rather than RRR for message #4, double-click one of its buttons.
Unless they have a complex call which prevents sending their locator in Tx 1 I do not log these QSOs as I regard them as incomplete.

73
Roger
GW4HZA


locked Re: Answering FTx CQ with Tx2-message #QSO_practices

Chuck - KY4CU
 

It's fairly standard to use this method to move things along. It's mentioned in 10.5 of the user's guide:

In some circumstances it may be desirable to make your QSOs as short as possible. To configure the program to start contacts with message #2, disable message #1 by double-clicking its radio-button in the Next column or Tx 1 button in the Now column. Similarly, to send RR73 rather than RRR for message #4, double-click one of its buttons.


locked Answering FTx CQ with Tx2-message #QSO_practices

SA5QED/David
 

I have noticed that sometimes my CQ calls, are responded to with a Tx2 message (containing Report Rcvd), instead of a Tx1 message (containing DX grid).
This means that I cannot calculate the distance. No big problem of course.
Guess thi occurs when DX station does not have the Auto Seq feature checked and that they are trying to shorten the total QSO time by omitting the Tx1 message.

Would be nice to have a checkbox "Only respond to Tx1 replies" (when Auto Seq is checked).

Example wtith NO Tx1 message in reply to QSO:
110922 Tx 1959 + CQ SE5M JO89
110930 -8 0.2 1655 + SE5M RA3xx -02
110937 Tx 1959 + RA3xx SE5M R-08
110945 -11 0.2 1656 + SE5M RA3xx RR73
110952 Tx 1959 + RA3xx SE5M 73

73 de David SE5M


locked Re: WSJT-X 2.5.4 TO N3FJP VA QSO Party Software #TechnicalHelpQuestion #ContestMode #Windows10

Wa4nuf@...
 

Thanks for the replies on this. I may just stay with phone this year. Did get my fair share of mobile contacts last year.
73. Gene. WA4NUF.


locked Re: WSJT-X 2.5.4 TO N3FJP VA QSO Party Software #TechnicalHelpQuestion #ContestMode #Windows10

Butch Washer
 

OOOOPPPS!!!

The digital QSO’s are 2 points not 3!!! Darn fat fingers!!! Still check!
Sorry!
Butch

On Jan 25, 2022, at 7:26 PM, Butch Washer <n5smqw4@...> wrote:

Good thought Jim,
I do read over the rules every year for the VA QSO party since it is in my current state and on I have competed in for many years.

Hey Gene!!! I always give RTTY a try every year just to see if I can get it stirred up! If you want 3 point contacts, check that every now and then!

Butch N5SMQ
On Jan 25, 2022, at 4:48 PM, Jim Brown <k9yc@...> wrote:

On 1/25/2022 6:04 AM, Butch Washer wrote:
The first l y thing special is a QSO Serial Number. I’m not in a position to look at WSJT-X and can’t remember if they me of the contest options will do that.
Also, I recently looked at the stats from 2021 and there is very little activity in the digital modes in the VAQP. Maybe 450 digital contacts or so for the whole party. A few people try to get RTTY and PSK31 going, but it is mostly Phone (SSB & FM) and CW used.
GM Butch,

I suggest that you read the Rules for the contest. Many contests, including most state QSO parties, limit entries to CW and SSB.

73, Jim K9YC


locked Re: WSJT-X 2.5.4 TO N3FJP VA QSO Party Software #TechnicalHelpQuestion #ContestMode #Windows10

Butch Washer
 

Good thought Jim,
I do read over the rules every year for the VA QSO party since it is in my current state and on I have competed in for many years.

Hey Gene!!! I always give RTTY a try every year just to see if I can get it stirred up! If you want 3 point contacts, check that every now and then!

Butch N5SMQ

On Jan 25, 2022, at 4:48 PM, Jim Brown <k9yc@...> wrote:

On 1/25/2022 6:04 AM, Butch Washer wrote:
The first l y thing special is a QSO Serial Number. I’m not in a position to look at WSJT-X and can’t remember if they me of the contest options will do that.
Also, I recently looked at the stats from 2021 and there is very little activity in the digital modes in the VAQP. Maybe 450 digital contacts or so for the whole party. A few people try to get RTTY and PSK31 going, but it is mostly Phone (SSB & FM) and CW used.
GM Butch,

I suggest that you read the Rules for the contest. Many contests, including most state QSO parties, limit entries to CW and SSB.

73, Jim K9YC


locked Re: Consequences of mistimed computer clock #TechnicalHelpQuestion

Reino Talarmo
 

I've noticed that even with large, 3 to 4 second, offsets between the sending and receiving station messages can often be decoded. When I begin a reply late I assume transmission begins at the normal sequence start and is simply truncated at the end. Does the redundant error correction cover that large a time span?
As the time snyc offset between two stations increases does decoding continue just as well as say differences between 0.1 and 2 seconds and then just collapse? Can a weak signal be decoded just as reliably at a 0.1 second and 2 second offset. Are there diminishing returns as sync offset between two stations decreases?
Hi Ed,

There are two issues that affect to the decoding probability of FT8 signals. The first one is time span used for synchronization search. It is about -2.5 to +2.5 seconds of the nominal start time of the reception. The start time is defined by local PC time. At a late TX start the transmission is simply truncated at the beginning. I.e. equivalent to a very deep QSB at the start, hi. That minimizes potential synchronization time difference. If the time difference is too large synchronization is not found and decoding is not possible at all.

The second is error correction as you assumed. It can cover more than about 4 seconds depending on the signal to noise ratio.

My knowledge is limited about the timespan receiver is actually sampling received signal after a transmission. There can be a loss of the start of the received message for that reason as well. In any case there is a range of the sync difference where decoding capability is not affected. With a larger sync difference decoding probability goes faster and faster down depending on the signal to noise ratio. I have not seen any simulation of it to give more meaningful values. It is quite safe to keep own time sync within one second.

73, Reino OH3mA


locked Re: Radio initialization CAT commands #EnhancementReqest #Cat_RigControl

 

Thanks Mike, but that really isn't a solution to my request. I have 5 (maybe 6 without being at the radio) WSJT-X "Configurations" set up for various digital modes on my IC-9700. I routinely switch configurations during an operating session. For example I might go back and forth from "MSK144" to "FT8" or back and forth from "EME-Q65" to "EME-JT65". Having to shut down WSJT and restart it would be more of a PITA than pressing a few buttons on the tough screen!

Giving the WSJT program proper the ability to send a string of commands (ala DxCommander) would cause the commands to be sent whenever one changes configurations.

--
John P.
WA2FZW


locked Re: Save=None does not stop saving wav files in the save directory #linux #WSJTX_config

MikeMc -- KA5TDA
 

In windows yes it does shut down saving wav files. Save Menu, None.

Mike


locked Re: low freq tones problem with Icom 706 #decode #transmit #txaudio #bluetooth

Jim Brown
 

On 1/25/2022 2:33 PM, Rik Rasmussen wrote:
It works great except for one thing. If my tx tone frequency is below about 375 Hz, it apparently gets rolled off by the radio and little or no power gets transmitted. From about 400 to 2400 HZ works great. Anyone else seen this? Any suggestions for a setting in the radio, a mod, or a workaround?
WSJT-X generates audio-frequency tones that are transmitted and received in SSB mode, and SSB radios include very steep bandpass filters typically set to pass modulation resulting from 300 Hz - 2.8 kHz audio. The same filters are generally in place for receive. In other words, what you are observing is how radios work. The ARRL Handbook and equivalent RSGB publications have lots of tutorial information. AND questions about how they work are on the exams for our ham licenses.

73, Jim K9YC

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