The double messages in blue are most definitely F/H. That's the only way you
squeeze two messages in one transmit slot. Therefore the other messages are
also Fox.
Perhaps Joe could comment on this...but it does appear all messages still get
decoded even if you're not in Hound mode.
Mike
On Friday, March 22, 2019, 11:01:55 PM CDT, Don Hill AA5AU
<aa...@bellsouth.net> wrote:
I've worked XR0ZRC four times on FT8 and did not use F/H at any time. So unless
it's possible to work Foxes and not use F/H or unless they have changed their
mode of operation midstream, I don't believe this is F/H.
Could be. I don't know.
This is my point. It's too hard to tell. There's needs to be some sort of
defining element. There could be one. Are we just not seeing it yet?
Don AA5AU
From: Black Michael via wsjt-devel [mailto:wsjt-devel@lists.sourceforge.net]
Sent: Friday, March 22, 2019 10:33 PM
To: 'WSJT software development'
Cc: Black Michael
Subject: Re: [wsjt-devel] F/H vs. MSHV vs. JTDX
The red is simply 2 channels of F/H with only one message in each. The blue is
2 channels each having 2 messages.
Therefore they are both F/H. MSHV does not do F/H. They do multi-channel
single message which is compatible with standard FT8.
de Mike W9MDB
On Friday, March 22, 2019, 5:53:52 PM CDT, Don Hill AA5AU <aa...@bellsouth.net>
wrote:
Thanks Patrick, but I don't know that what you say is true. Here is a
screenshot from XR0ZRC which shows a couple of transmissions
The transmission outlined in red seems like MSHV but the transmission in blue
looks like F/H?
I think both are MSHV?
Don AA5AU
From: Patrick 9A5CW [mailto:pat.9a...@gmail.com]
Sent: Friday, March 22, 2019 2:34 PM
To: WSJT software development
Subject: Re: [wsjt-devel] F/H vs. MSHV vs. JTDX
Hi Don,
Only MSHV have implemented multi answering protocol or so called F/H.
JTDX doesnt have Fox mode at all, but can work/call both WSJT-X or MSHV Foxes!
Simple, MSHV in most cases Run a Fox in both periods in the middle of the
spectrum. Each slot send only one specific message to a caller.
AA5AU ZL7X -12
9A5CW ZL7X R-11
AL7KK RR73
....
Etc... so it can answer even callers calling him with report instead od Grid.
It doesnt have Hound frequency control as it is in WSJT-X when R-11 report its
send under 1000 Hz, you can call him wherever you want but you must be in his
RX passband. Normaly the passband is defined by his TX freq + - 1500Hz.
Short Tip ;) if u figure out that he is using MSHV call him as lower as you can
;) 400 to 500Hz does the job very well! Dont move your TX freq next sequence,
except due big QRM. If you dont get his RR73 call him again beacuse he probably
switched to another station after 2 minutes or less depends by what time is set
into QSo timer in the program.
I am normaly using JTDX and I didnt had any problems to work both WSJT-X or
MSHV dxpeds.
Wish you luck !
73
Patrik 9A5CW
Datuma pet, 22. ožu 2019. 19:25 Don AA5AU <aa...@bellsouth.net piše:
I've not run MSHV or JTDX on FT8 yet. My preference is WSJT-X so I don't know
how to spot a DX station running one of these clones. Is there a way to tell
what the DX station is using (when using multiple streams)?
Today I had a difficult time working 5T5PA. Nearly all spots said he was
running F/H and none said he wasn't (he probably is running F/H), but it took
longer than 10 minutes for me to complete the contact when it didn't seem like
it should have been that difficult. I was tempted to turn F/H off but I didn't.
I did finally get RR73 from him.
Are there certainly things we can look for in determining if the DX is running
F/H? If so, what are these tell-tale signs? I'm a little frustrated with the
different approaches from FT8 clones and DXpeditions that use them. It's
starting to create a lot of confusion that seems unnecessary. It would be nice
if it was possible for WSJT-X to determine if the station is running F/H or not
and display it somehow. I think if the DX is running F/H and the caller is not
(and using WSJT-X) that the caller will get a warning, but it seems we need
something more to identify F/H and non-F/H stations.
If a DX station is running MSHV and the stations calling are running F/H, is it
possible to still make a contact? Also, vice versa, if the DX is running F/H
and the calling station is not, can a QSO be completed?
Also, it would be nice if the F/H transmit timer for Hounds could be extended
longer than 2 minutes Five minutes seems more appropriate.
Don AA5AU
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