Search found 40 matches: f3 ptc

Searched query: f3 ptc

ignored: f3

by w-u-2-o
Mon Oct 14, 2019 11:37 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

In another topic, Hauke, VK1HW reports:
Fuse: MF-USML400-2 (Element14 277-6833) fits like a glove
So that means either the Bourns or Lttlefuse 1210 size 4A devices should work well.
by Segrest
Sun Oct 13, 2019 2:52 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

... Everyone, I finally got through the knot hole and managed to get Protocol 2 and Thetis running on my 100D. The bottom line for me was having the F3 jumper in place (by accident as it turned out) and loading the Angelia_Protocol_2_v12.1_pre1_5770 Protocol 2 firmware. The latter is not in the standard ...
by w-u-2-o
Sat Oct 12, 2019 12:43 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Scott, Your last comments are encouraging. Can you identify the specific builds in your list of timing variants? I will clearly want to try each of them. See this topic: https://apache-labs.com/community/viewtopic.php?f=32&t=3054 I apologize for seeming obtuse, but I'm not sure I understand you...
by Segrest
Fri Oct 11, 2019 6:38 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Scott, Your last comments are encouraging. Can you identify the specific builds in your list of timing variants? I will clearly want to try each of them. I apologize for seeming obtuse, but I'm not sure I understand your sample rate comment. Are you suggesting the rate I use is a factor? If so, are ...
by Segrest
Fri Oct 11, 2019 6:32 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Ok, I overlooked the attachments tab...

Here is a close up of the bridged F3 fuse.
100D F3 Brigded.png
100D F3 Brigded.png (562.63 KiB) Viewed 1121 times


And this is the whole board is shown below.

I hope this helps...

Bob
KO2F
by w-u-2-o
Fri Oct 11, 2019 5:35 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Bob, It is easy to post photos. When making a new post, look down below the Preview and Submit buttons. You will see some other options and a tab marked "Attachments". Click that tab and then click the "Add files" button. Add the file then click the "place inline" butto...
by Segrest
Fri Oct 11, 2019 5:23 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

... had some time to open my 100D for the first time this morning. I was shocked to discover that the prior owner of my 100D had already replaced the F3 fuse with a wire bridge. I purchased the rig more than 2 years ago and didn't recall any mention that it had been modified. But this could be a lost ...
by vk1hx
Thu Oct 10, 2019 10:55 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi all, Could someone post a picture where the F3 PTC on the Angelia Board is (for a 100D) please? The only F3 (2amp) fuse I can see on the schematic ...
by w-u-2-o
Thu Oct 10, 2019 3:42 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Bob, Your lengthier explanation makes a lot more sense, thank you. I also operate in a similar way, with my station rack in the basement, complete with remote switching of power, and remote switching of the bootloader switch, too. My operating position is in my second floor studio office. You can se...
by Segrest
Thu Oct 10, 2019 1:51 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi Scott, Actually, I have tried the last 4 or 5 Protocol 2 versions for the 100D. I didn't have any significant issues loading the firmware or launching Thetis. But in each case, my 100D would lock up and become unresponsive within an hour or 2. In my case the rig is not in the same building as my ...
by w-u-2-o
Thu Oct 10, 2019 1:23 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

The fact that it turned out it won't work has been frustrating, and I'm hoping the F3 replacement will get me back on track. Bob KO2F Bob--how many different versions of P2 did you try? If you only tried v12 and it didn't run, then fixing F3 is the least of your ...
by w-u-2-o
Thu Oct 10, 2019 1:20 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi all, Could someone post a picture where the F3 PTC on the Angelia Board is (for a 100D) please? The only F3 (2amp) fuse I can see on the schematic ...
by Segrest
Thu Oct 10, 2019 12:41 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

... the 100D specifically to use with Protocol 2 and Thetis. The fact that it turned out it won't work has been frustrating, and I'm hoping the F3 replacement will get me back on track. Bob KO2F
by vk1hx
Thu Oct 10, 2019 8:12 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi all,

Could someone post a picture where the F3 PTC on the Angelia Board is (for a 100D) please?

The only F3 (2amp) fuse I can see on the schematic is circled in the below photo. Just wanting to make sure I replace the right one.
by w-u-2-o
Thu Oct 10, 2019 12:34 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi Bob,

I actually never got around to modifying my 100D, so I can't really say. I've been concentrating on my 8000DLE.

73,

Scott
by Segrest
Thu Oct 10, 2019 12:02 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi Scott,

Did you get around to change the F3 fuse in your Angelia?

Did it resolve the apparent lockup problem?

Have there been adverse effects?

Bob
KO2F
by w-u-2-o
Wed Oct 09, 2019 2:00 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

I don't have a photo, but if you orient the Angelia card so that the ATX power connector is at the bottom left, then you will find F3 just above the right end of the power connector and to the left of the group of jumpers. It should be clearly marked on the silk screen. By the way, this ...
by Segrest
Tue Oct 08, 2019 11:09 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Where can I find a picture to locate the fuse on my Angelia board?

Bob
KO2F
by w-u-2-o
Sat Aug 31, 2019 2:02 pm
Forum: Protocol 2 (all radios)
Topic: Angelia (ANAN-100D) Protocol 2 test pilots: please check in
Replies: 44
Views: 5816

Re: Angelia (ANAN-100D) Protocol 2 test pilots: please check in

Sounds like it could be the PTC ("fuse") overheat issue.
by w-u-2-o
Fri May 03, 2019 3:24 pm
Forum: Protocol 2 (all radios)
Topic: P2 version 10.3 released for 14-bit Hermes (10E and 100B)
Replies: 5
Views: 1273

P2 version 10.3 released for 14-bit Hermes (10E and 100B)

... so feedback will be important. If you have not replaced or shorted the F3 PTC device and observe sudden stoppages or crashes that are only recoverable by power cycling ...
by w-u-2-o
Thu Apr 18, 2019 4:57 pm
Forum: Protocol 2 (all radios)
Topic: P2 status, and no more builds for at least two weeks
Replies: 0
Views: 971

P2 status, and no more builds for at least two weeks

... actually tried P2, so far there has only been a single report of an F3 PTC overload (on a Hermes), which is very promising. Doug has also made huge strides with Thetis ...
by w-u-2-o
Sun Apr 14, 2019 4:56 pm
Forum: Protocol 2 (all radios)
Topic: Major New Protocol 2 Firmware Release for All Hardware EXCEPT 14-bit Hermes
Replies: 0
Views: 1085

Major New Protocol 2 Firmware Release for All Hardware EXCEPT 14-bit Hermes

... with increased temperatures due to the very tight margins on the "F3" PTC (reset-able fuse) on the 3V supply to the FPGA. If everything works great at first and ...
by w-u-2-o
Fri Dec 07, 2018 10:57 am
Forum: Protocol 2 (all radios)
Topic: New Protocol 2 Firmware Released
Replies: 29
Views: 8148

Re: New Protocol 2 Firmware Released

I'm going to suggest it is too early to start panicking over F3 issues. Let's see how this newest firmware performs on a larger sample of ... here to peruse: https://apache-labs.com/community/search.php?keywords=f3+ptc . Experience suggests it is not an issue for cooling or the PSU. The firmware ...
by w-u-2-o
Fri Dec 07, 2018 4:10 am
Forum: Protocol 2 (all radios)
Topic: New Protocol 2 Firmware Released
Replies: 29
Views: 8148

New Protocol 2 Firmware Released

... of the FPGA to increase. On these SDR cards, overheating of the "F3" positive temperature coefficient (PTC) device which protects the 3.3V supply has been reported, with resulting erratic operation ...
by w-u-2-o
Mon Nov 12, 2018 6:56 pm
Forum: Protocol 2 (all radios)
Topic: New Protocol Update
Replies: 17
Views: 5066

Re: New Protocol Update

... with P2 is that it causes the power consumption of the FPGA on the Hermes (14 and 16 bit versions) and Angelia cards to exceed the rating of the PTC device which protects the 3V supply. Read more here https://apache-labs.com/community/viewtopic.php?f=17&t=2777 and here https://apache-labs.com/community/viewtopic.php?f=17&t=2354&p=2604 ...
by w-u-2-o
Mon Jul 16, 2018 10:44 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

As far as I know, only one person has modified their Angelia and they used a small bit of wire. When I get the part I just ordered (see above) I am going to try that.
by F1HDI
Mon Jul 16, 2018 7:03 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi Scott, A quick 'back' on my anan100D#1 from V2 to V1 this morning show No sign of osc instability either on warm-up nor (after 1 hour) on regular basis. I am not very familiar with the features of this forum but can send measurement pictures to you. I'll do the same measurement on my 100D#2 later...
by w-u-2-o
Sun Jul 15, 2018 1:18 pm
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Couldn't say for sure, Jean-Marc. I don't know what a "clock restart" is. The only PTC that's been identified that might work is the 1210L450SLWR identified above. As far as I know, nobody has tried it yet. However, thanks for reminding me, I'm going to order ...
by F1HDI
Sun Jul 15, 2018 8:28 am
Forum: Everything Else: Antennas, Relays, Switches, Power, Grounding, Cooling, etc.
Topic: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2
Replies: 29
Views: 4466

Re: Angelia F3 PTC ("fuse") replacement/upgrade for Protocol 2

Hi, On two anan100D (angelia) running protocol V2 and thus Thetis, I am seeing the following issue and wonder if this could be related to the 'fuse' issue described here : - tests conditions are two anan100D, one from the early batches (rev16, low perf 10MHz tcxo) and an upgraded one (rev24, CWT817 ...

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