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AR15.COM
3/12/2026 12:18:32 AM EDT
[Last Edit: K9-Bob][Edited]
Attached File


https://holycluster.iarc.org/

This is an interesting DX Cluster website I found that I thought might be useful for the group.
“Every man has two deaths, when he is buried in the ground and the last time someone says his name. In some ways, men can be immortal. “ - Ernest Hemingway
3/12/2026 1:57:27 PM EDT
[#1]
Cool find, I think I like the way this one is laid out.
3/12/2026 2:14:22 PM EDT
[#2]
I have been playing with it all morning and I really like it.
“Every man has two deaths, when he is buried in the ground and the last time someone says his name. In some ways, men can be immortal. “ - Ernest Hemingway
3/12/2026 7:12:19 PM EDT
[#3]
Heck yeah, that's fun.  Just used it to make contacts Puerto Rico & Japan.
3/19/2026 6:22:23 AM EDT
[#4]
This site is great, especially for those of us without a waterfall.

I've used it to make quite a few DX contacts now.  

I find it much easier to use than the other DX sites I've looked at
3/19/2026 4:32:40 PM EDT
[#5]
I like it, thank for posting it.
Mach
Nobody is coming to save us.

.
3/19/2026 5:07:19 PM EDT
[Last Edit: K9-Bob][Edited] [#6]
I'm happy others are finding it as useful as I do.

I have been using the Alert and Show Only feature the most.  

I really does  help me zero in on DX i need to work the most.
“Every man has two deaths, when he is buried in the ground and the last time someone says his name. In some ways, men can be immortal. “ - Ernest Hemingway
3/20/2026 2:53:52 AM EDT
[#7]
Yeah, I like that I can look only at the bands I use, and only SSB.

I hit a station in the Austral Islands using it today on 15m.
3/20/2026 10:14:10 AM EDT
[#8]
I really wish it would interface with the radio so I could just click on the DX freq shown and have the radio auto move to that freq. I know, I am lazy.
Mach
Nobody is coming to save us.

.
3/20/2026 10:43:49 AM EDT
[#9]
Quote History
Originally Posted By Mach:
I really wish it would interface with the radio so I could just click on the DX freq shown and have the radio auto move to that freq. I know, I am lazy.
View Quote
I know a guy who knows a guy...Anyways, I think they are working on that.
3/20/2026 11:29:15 AM EDT
[#10]
Quote History
Originally Posted By Mach:
I really wish it would interface with the radio so I could just click on the DX freq shown and have the radio auto move to that freq. I know, I am lazy.
View Quote


It does and here is the link: https://holycluster.iarc.org/addons

Enjoy!
“Every man has two deaths, when he is buried in the ground and the last time someone says his name. In some ways, men can be immortal. “ - Ernest Hemingway
3/20/2026 11:56:54 AM EDT
[#11]
Quote History
Originally Posted By K9-Bob:


It does and here is the link: https://holycluster.iarc.org/addons

Enjoy!
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By K9-Bob:
Originally Posted By Mach:
I really wish it would interface with the radio so I could just click on the DX freq shown and have the radio auto move to that freq. I know, I am lazy.


It does and here is the link: https://holycluster.iarc.org/addons

Enjoy!
Holy Crap, Thanks!
Mach
Nobody is coming to save us.

.
3/20/2026 12:59:57 PM EDT
[Last Edit: K9-Bob][Edited] [#12]
I have the CAT working on my Flex, Yaesu, and Icom radios.  Enjoy!
“Every man has two deaths, when he is buried in the ground and the last time someone says his name. In some ways, men can be immortal. “ - Ernest Hemingway
3/21/2026 3:54:09 PM EDT
[#13]
I wish more people were spotting to it or there was a way to add other DX cluster data to it
Mach
Nobody is coming to save us.

.
3/22/2026 10:03:45 AM EDT
[#14]
Anybody know if The Holy Cluster has a telnet address?

or QRZCQ DX Cluster has a telnet address?

or any other major use DX cluster.

My Apache Labs radio can put spots of the waterfall but I need telnet addresses of the clusters to get those spots on the waterfall. I have some and it works, but don't have any of the big names, just individual ham clusters and am looking for multiple sources to make the data more complete.
Mach
Nobody is coming to save us.

.
3/22/2026 1:27:09 PM EDT
[#15]
I emailed the developer to see if they could provide me an answer about the DX cluster selection.
“Every man has two deaths, when he is buried in the ground and the last time someone says his name. In some ways, men can be immortal. “ - Ernest Hemingway
3/22/2026 3:18:44 PM EDT
[#16]
Quote History
Originally Posted By Mach:
Anybody know if The Holy Cluster has a telnet address?

or QRZCQ DX Cluster has a telnet address?

or any other major use DX cluster.

My Apache Labs radio can put spots of the waterfall but I need telnet addresses of the clusters to get those spots on the waterfall. I have some and it works, but don't have any of the big names, just individual ham clusters and am looking for multiple sources to make the data more complete.
View Quote


You don't like Ernst's OE3IDE Cluster software?
Tennessee Squire
3/22/2026 10:31:37 PM EDT
[Last Edit: Mach][Edited] [#17]
Quote History
Originally Posted By SandHillsHillbilly:


You don't like Ernst's OE3IDE Cluster software?
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By SandHillsHillbilly:
Originally Posted By Mach:
Anybody know if The Holy Cluster has a telnet address?

or QRZCQ DX Cluster has a telnet address?

or any other major use DX cluster.

My Apache Labs radio can put spots of the waterfall but I need telnet addresses of the clusters to get those spots on the waterfall. I have some and it works, but don't have any of the big names, just individual ham clusters and am looking for multiple sources to make the data more complete.


You don't like Ernst's OE3IDE Cluster software?
Never heard of it, going to go look it up


ETA: that is neat, it maps out the DX on a map as a background image of the waterfall / scope display but you still need telnet address's to dx clusters to get the data. I do not like graphic displays behind the waterfall / scope, it is too busy for me. I just want more DX to show up on the display compared to what I am getting now.
Mach
Nobody is coming to save us.

.
3/22/2026 11:42:37 PM EDT
[Last Edit: SandHillsHillbilly][Edited] [#18]
Attached File


Is that enough spot for you?
This is what you want it connects to all the telenet clusters in parallel.
https://www.oe3ide.com/cluster-tci-bridge/

If you haven't joined the Thetis Discord server I highly recommend that you do. Lot of activity with 3rd party stuff and Thetis.
DM me if you want an invite.
Tennessee Squire
3/24/2026 9:43:04 AM EDT
[#19]
Quote History
Originally Posted By SandHillsHillbilly:
https://www.ar15.com/media/mediaFiles/159150/image_png-3734581.JPG

Is that enough spot for you?
This is what you want it connects to all the telenet clusters in parallel.
https://www.oe3ide.com/cluster-tci-bridge/

If you haven't joined the Thetis Discord server I highly recommend that you do. Lot of activity with 3rd party stuff and Thetis.
DM me if you want an invite.
View Quote
That is what I am looking for!
Mach
Nobody is coming to save us.

.
3/27/2026 9:31:09 PM EDT
[#20]
Thanks for reaching out.

“The Holy Cluster” is actually connected to multiple telnet servers simultaneously, primarily for redundancy and reliability.
In practice, most telnet servers are highly interconnected and continuously share spots data with each other.
This means that regardless of the specific server you connect to, the information you receive is essentially identical in the vast majority of cases.
Because of this, selecting a specific one typically doesn’t provide a meaningful difference in the data, while the current setup ensures better availability and stability.
That said, we can certainly consider adding more flexibility in the future if there’s a specific use case that would benefit from it.
Do you have one in mind?

73,
Gil 4Z1KD / KO6GBU
"The Holy Cluster" dev team.


The reply I received  about Telnet with Holy Cluster.
“Every man has two deaths, when he is buried in the ground and the last time someone says his name. In some ways, men can be immortal. “ - Ernest Hemingway
3/28/2026 7:54:18 AM EDT
[#21]
Quote History
Originally Posted By K9-Bob:
Thanks for reaching out.

"The Holy Cluster" is actually connected to multiple telnet servers simultaneously, primarily for redundancy and reliability.
In practice, most telnet servers are highly interconnected and continuously share spots data with each other.
This means that regardless of the specific server you connect to, the information you receive is essentially identical in the vast majority of cases.
Because of this, selecting a specific one typically doesn't provide a meaningful difference in the data, while the current setup ensures better availability and stability.
That said, we can certainly consider adding more flexibility in the future if there's a specific use case that would benefit from it.
Do you have one in mind?

73,
Gil 4Z1KD / KO6GBU
"The Holy Cluster" dev team.


The reply I received  about Telnet with Holy Cluster.
View Quote
Thanks.

They didn't say what their telnet address is though. I am going to email him and see if the holy cluster has a telnet address I can put into thetis
Mach
Nobody is coming to save us.

.
3/28/2026 9:03:39 AM EDT
[Last Edit: Mach][Edited] [#22]
Quote History
Originally Posted By SandHillsHillbilly:
https://www.ar15.com/media/mediaFiles/159150/image_png-3734581.JPG

Is that enough spot for you?
This is what you want it connects to all the telenet clusters in parallel.
https://www.oe3ide.com/cluster-tci-bridge/

If you haven't joined the Thetis Discord server I highly recommend that you do. Lot of activity with 3rd party stuff and Thetis.
DM me if you want an invite.
View Quote
Thanks. I installed it but I am not getting the spots on the panadapter for some reason.

TCI is connected to the thetis server, lots of spots on the TCI map and listing, they just do not show up in thetis

TCI says radio is connected
Mach
Nobody is coming to save us.

.
3/28/2026 11:37:45 AM EDT
[#23]
Looking at the site right now while the contest is running is crazy, it's just bang bang bang, one spot after another.
3/31/2026 9:23:31 AM EDT
[#24]
Here is a video interview with one of the developers of the Holy Cluster. It is behind the scenes type of discussion with the developer, and provides some insight as to what they are looking at for the future.

Is This The Ultimate DX Cluster? | Inside Holy Cluster with 4X1XP

3/31/2026 10:27:58 AM EDT
[#25]
I think it would be perfect if there was an option to make the world map flat. It is too hard to see what the country is when it's curved. I understand the world, I would rather see the counties flat install of skewed into a round ball.
Mach
Nobody is coming to save us.

.
3/31/2026 11:01:30 AM EDT
[#26]
Quote History
Originally Posted By Mach:
I think it would be perfect if there was an option to make the world map flat. It is too hard to see what the country is when it's curved. I understand the world, I would rather see the counties flat install of skewed into a round ball.
View Quote


I think the map helps if you use a directional antenna, but I would also like the flat map option too.
“Every man has two deaths, when he is buried in the ground and the last time someone says his name. In some ways, men can be immortal. “ - Ernest Hemingway
4/7/2026 2:50:00 AM EDT
[Last Edit: TinLeg][Edited] [#27]
That looks very cool.  Though - windows only for the CAT control add on.


I may be missing something - does this do something DXLabs or HamRadioDeluxe or MacLoggerDX or some of the other radio control / spotting / DX cluster software doesn't do?

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