Date   

Re: Icom OPC-1529R pinout

Ralph Lease
 

Ryan,
I'm probably looking at the same data online that you are. It shows the 2.5 mm stereo plug tip as db9 terminal 3, the center as terminal 2 and the rear as terminal 5.

Ralph 

On Fri, Nov 20, 2020, 8:46 AM Ryan - KJ7GIE <rsm@...> wrote:
Does someone have an Icom OPC-1529R cable that they would kindly verify the pinout for me? Or can I borrow it for the weekend?

This is the RS-232C (DB9 <-> 2.5mm phono) cable used on the DATA1 jack of the IC-7100 (and others) radio. On the IC-7100 this is the port for feeding GPS NMEA sentences. I bought a generic cable and the radio does not indicate its seeing the sentences. Next step in my troubleshooting is to identify that my generic cable is pinned properly. My Google searching indicates my cable _should_ be good but I cannot find any official pinout material from Icom so I hope someone can confirm from the "real deal" cable.

Much appreciated, happy Friday, and 73's






Icom OPC-1529R pinout

Ryan - KJ7GIE
 

Does someone have an Icom OPC-1529R cable that they would kindly verify the pinout for me? Or can I borrow it for the weekend?

This is the RS-232C (DB9 <-> 2.5mm phono) cable used on the DATA1 jack of the IC-7100 (and others) radio. On the IC-7100 this is the port for feeding GPS NMEA sentences. I bought a generic cable and the radio does not indicate its seeing the sentences. Next step in my troubleshooting is to identify that my generic cable is pinned properly. My Google searching indicates my cable _should_ be good but I cannot find any official pinout material from Icom so I hope someone can confirm from the "real deal" cable.

Much appreciated, happy Friday, and 73's


Re: Tonights mini exercise

Dan Pflugrath
 

For reference on your 6 meter test tonight from Arlington.  Nothing on FM but on SSB I could hear voices in the back ground  but Ken W7ECK moved the S meter a little and the voice came through clear.  Curious what antenna Ken was using.

 

73,

Dan KA7GPP

 

 

 

 

From: snovarc@snovarc.groups.io [mailto:snovarc@snovarc.groups.io] On Behalf Of Paul Butzi (W7PFB)
Sent: Thursday, November 19, 2020 4:08 PM
To: snovarc@snovarc.groups.io
Subject: Re: [SnoVARC] Tonights mini exercise

 

If a frequency used in the exercise is in use, or is unusable due to interference, look up and down a short distance on the dial to find the exercise.

 

-p W7PFB
73, Don’t forget to smile and have fun!



On Nov 19, 2020, at 4:05 PM, Rowland <rowland.brasch@...> wrote:

 

plus of minus interference or prior use.....  HUH?

 

 

Thanks,

 

Rowland

 

 

 

On Thu, Nov 19, 2020 at 3:03 PM Tom WA7TBP via groups.io <tomwa7tbp=aol.com@groups.io> wrote:

Hello all:

Tonight our mini exercise will be 6 meter FM simplex and SSB testing. We will use the frequencies listed below, plus of minus interference or prior use:

 

    FM 52.54 MHz, no tone, no offset

 

    SSB: USB, 50.200

 

I will use the Cougar repeater to coordinate any changes in the frequencies shown above.

 

See you tonight after net. We are usually done with net around 8:15 PM, give or take a few minutes. Issaquah ham club members, feel free to share this info with other Issaquah club members you think may be interested in participating.

 

73,

 

Tom

 

 

 



____________________________________________________________

Top News - Sponsored By Newser


Hex Beam Antenna

Howard E. Mahran / WA1HEM
 

Here is a link to the Hex Beam antenna I mentioned during the Rookie Roundtable:

http://k4hex.com/products.asp


--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Tonights mini exercise

Howard E. Mahran / WA1HEM
 

I’m all tuned up and ready to give it a go. Thanks Tom!


On Nov 19, 2020, at 4:08 PM, Paul Butzi (W7PFB) <w7pfb@...> wrote:

If a frequency used in the exercise is in use, or is unusable due to interference, look up and down a short distance on the dial to find the exercise.

-p W7PFB
73, Don’t forget to smile and have fun!

On Nov 19, 2020, at 4:05 PM, Rowland <rowland.brasch@...> wrote:

plus of minus interference or prior use.....  HUH?


Thanks,

Rowland



On Thu, Nov 19, 2020 at 3:03 PM Tom WA7TBP via groups.io <tomwa7tbp=aol.com@groups.io> wrote:
Hello all:

Tonight our mini exercise will be 6 meter FM simplex and SSB testing. We will use the frequencies listed below, plus of minus interference or prior use:
 
    FM 52.54 MHz, no tone, no offset
 
    SSB: USB, 50.200
 
I will use the Cougar repeater to coordinate any changes in the frequencies shown above.
 
See you tonight after net. We are usually done with net around 8:15 PM, give or take a few minutes. Issaquah ham club members, feel free to share this info with other Issaquah club members you think may be interested in participating.
 
73,
 
Tom




--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Tonights mini exercise

Paul Butzi (W7PFB)
 

If a frequency used in the exercise is in use, or is unusable due to interference, look up and down a short distance on the dial to find the exercise.

-p W7PFB
73, Don’t forget to smile and have fun!

On Nov 19, 2020, at 4:05 PM, Rowland <rowland.brasch@...> wrote:

plus of minus interference or prior use.....  HUH?


Thanks,

Rowland



On Thu, Nov 19, 2020 at 3:03 PM Tom WA7TBP via groups.io <tomwa7tbp=aol.com@groups.io> wrote:
Hello all:

Tonight our mini exercise will be 6 meter FM simplex and SSB testing. We will use the frequencies listed below, plus of minus interference or prior use:
 
    FM 52.54 MHz, no tone, no offset
 
    SSB: USB, 50.200
 
I will use the Cougar repeater to coordinate any changes in the frequencies shown above.
 
See you tonight after net. We are usually done with net around 8:15 PM, give or take a few minutes. Issaquah ham club members, feel free to share this info with other Issaquah club members you think may be interested in participating.
 
73,
 
Tom




Re: Tonights mini exercise

Rowland
 

plus of minus interference or prior use.....  HUH?


Thanks,

Rowland



On Thu, Nov 19, 2020 at 3:03 PM Tom WA7TBP via groups.io <tomwa7tbp=aol.com@groups.io> wrote:
Hello all:

Tonight our mini exercise will be 6 meter FM simplex and SSB testing. We will use the frequencies listed below, plus of minus interference or prior use:
 
    FM 52.54 MHz, no tone, no offset
 
    SSB: USB, 50.200
 
I will use the Cougar repeater to coordinate any changes in the frequencies shown above.
 
See you tonight after net. We are usually done with net around 8:15 PM, give or take a few minutes. Issaquah ham club members, feel free to share this info with other Issaquah club members you think may be interested in participating.
 
73,
 
Tom


Tonights mini exercise

Tom WA7TBP
 

Hello all:

Tonight our mini exercise will be 6 meter FM simplex and SSB testing. We will use the frequencies listed below, plus of minus interference or prior use:
 
    FM 52.54 MHz, no tone, no offset
 
    SSB: USB, 50.200
 
I will use the Cougar repeater to coordinate any changes in the frequencies shown above.
 
See you tonight after net. We are usually done with net around 8:15 PM, give or take a few minutes. Issaquah ham club members, feel free to share this info with other Issaquah club members you think may be interested in participating.
 
73,
 
Tom


Brand new LP-100A Meter

Howard E. Mahran / WA1HEM
 

Hi Snovarcians,

I have a brand new, beautiful LP-100A watt / SWR meter with 160-6M coupler that is going to be returned to the Vendor as I received the unit in error. I have the option of re-homing it. Contact me if interested. 


lp-100a-wattmeter-n8lp - QRZ NOW - Ham Radio News

lp100

lp100

--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Road Closure

Ken Kosters
 

Working? Hopefully you are using this term loosely, laughs.

Ken 

On Wed, Nov 18, 2020 at 3:17 PM Rowland <rowland.brasch@...> wrote:
Looks like they will be working on the highway slide area starting on the 30th. Click on the following link to review. Dates have changed once already and they may change again.



Thanks,

Rowland


Road Closure

Rowland
 

Looks like they will be working on the highway slide area starting on the 30th. Click on the following link to review. Dates have changed once already and they may change again.



Thanks,

Rowland


My portable network time server / GPS feeder is about done

Ryan - KJ7GIE
 

I've had this idea for a while and finally bought the parts and started working on it a couple weeks back. For the most part, as of this past weekend, it works. What is it? Why?

Some digital modes require accurate time and some radio software is easier to use if it knows your location. Examples of these are FT8, JT65, APRS, Fldigi / Flmsg, some Winlink forms, D-Star (if the Icom radio knows your location it will auto-populate nearby repeaters), and a handful of others. My idea was to use a Raspberry Pi with GPS module to both follow the Pulse Per Second (PPS), to keep the clock accurate, as well as send the NMEA data out a serial port to whatever device is attached. The Raspberry Pi would also act as a Network Time Protocol (NTP) server so other devices could use the high accuracy of the PPS to keep their clocks synced. The Raspberry Pi can also act as a DHCP server so, in the field for example, anything plugged into it on the network will obtain an IP address as well as auto-configure to use the Pi as the time source. The Pi can be run from any 5v power source. I have not identified the actual power draw yet.

Parts List:
Raspberry Pi 4 - I'm using a 3 because that's what I had on hand. There are issues with the 3 that make it less accurate. I recommend get a 4 if you can but a 3 does work.

Adafruit Ultimate GPS HAT - There are other options that should work but this was straightforward and works as advertised.

Adafruit Active GPS Ant - The GPS HAT has an embedded antenna on the circuit board but I wasn't sure how good it was so got this antenna anyway. More on this below.

SMA - UMCC pigtail - The external antenna connector on the GPS HAT is one of those silly tiny, expect you'll damage it, UMCC connectors. Need this adapter to use the ant.

AB Electronics Serial Pi Plus - More on this below

One 1220CR battery - This allows the GPS HAT to keep time even if powered off which allows for _really_ fast GPS locks times once it is powered.

Short write-up:
I can go into more detail but essentially here is my set-up. The GPS HAT starts trying to acquire a signal as soon as it has power. I used Raspberry Pi OS. There is only 1 serial port on the Raspberry Pi and that, by default, is used for the console. This console configuration gets disabled which allows the HAT to take-over the serial UART. Now the Raspberry Pi can read the GPS output from the HAT. Configure the Raspberry Pi to read the PPS on the GPIO pin and enable the kernel PPS module. The UART of the Pi works with 2-wires and +/- 3 volts. That is completely unreliable for anything that is expecting RS232 (including my radio and the PC I used for testing). The Serial Pi Plus converts the UART signals to proper RS232 which the attached device can understand. This is the only reason the Serial Pi is required. There may be better options than the Serial Pi but this was a quick path to solve the UART problem. Note! This is a _giant_ hack as the GPS HAT is expected to feed the Raspberry Pi and _not_ an external device but we'll all just nod our heads, smile, and move on (again, this is the short write-up).

Software used: ntp-4.2.8p15 compiled with minimal configuration + gps/pps module. A couple start-up scripts and a script to hack-up getting the Serial Pi to spit-out the NMEA lines periodically. I am not using gpsd as that causes issues with the serial port. NTP has its own modules for reading time from a GPS / PPS and that's working just fine. Various other bits of software were used for testing but I settled on NTP stand-alone. It ended-up being the cleanest way to accomplish the goal.

Testing: I currently have NTP running on the raspberry pi using both the PPS as well as the GPS feed. I also added all the Ubuntu pool servers. I've let the thing stabilize over the last 12 hours (NTP wants multiple days but this is closer to what it looks like shortly after boot which is how it would work in the field) and the results are below. Surprisingly the GPS HAT board antenna, in a south facing window sill, acquires a GPS lock without issue but it's location drifts a bit. For testing this works fine but I'm looking forward to seeing if it gets better with the external antenna. I am waiting to get to a more "permanent" installation before using the little UMCC pigtail. I may even wait until I have a proper case to keep that cable stable (I'm fearful of busting the connector on the board). The serial port is connected to a PC in my shack and I'm using VisualGPS which will graph Lat / Long / Altitude so I can see any drift from the GPS. So far, feeding the NMEA from the serial port is reliable enough to keep VisualGPS within a house of my actual location. Additionally, on the Windows 10 PC I loaded NTP and disabled Windows time sync. Immediately after doing this I fired WSJT to receive some FT8 and was averaging 0.5 DT. I think that's pretty good.

Next: I have a DB9 -> 2.5mm cable ordered so I can plug the thing into my IC-7100. I need to get the Raspberry Pi integrated with my home network and update my DHCP server so all the machines in my house will use it for time sync. Need to identify power draw with the ext ant. I'm on the hunt for someone who can 3D print me a custom case. I think that's about it. Onto the next project. And, of course, work on my field kit since this whole thing is intended to be portable. ohh... maybe do a more in-depth write-up on some of the things I learned but that will be towards a targeted audience so I don't bore the whole club.

I'll post a picture on FB.

73's all!

$ ntpq -pn
remote refid st t when poll reach delay offset jitter
==============================================================================
o127.127.22.0 .PPS. 0 l 1 64 377 0.000 +0.084 0.027
*127.127.20.0 .GPS. 0 l 2 64 377 0.000 -121.72 118.636
+10.66.66.53 137.190.2.4 2 u 44 64 377 0.578 +4.665 0.085
0.ubuntu.pool.n .POOL. 16 p - 64 0 0.000 +0.000 0.002
1.ubuntu.pool.n .POOL. 16 p - 64 0 0.000 +0.000 0.002
2.ubuntu.pool.n .POOL. 16 p - 64 0 0.000 +0.000 0.002
3.ubuntu.pool.n .POOL. 16 p - 64 0 0.000 +0.000 0.002
192.168.114.255 .BCST. 16 B - 64 0 0.000 +0.000 0.002
+5.189.141.35 17.253.54.123 2 u 57 64 377 178.121 +0.388 4.187
+50.205.244.39 50.205.244.27 2 u 11 64 377 75.812 +0.772 10.082
+45.157.190.152 84.16.73.33 2 u 5 64 377 180.309 -0.108 2.777
+138.236.128.36 216.218.254.202 2 u 63 64 177 77.774 -3.311 1.599
+172.86.179.86 129.134.26.123 2 u 62 64 377 67.850 +2.049 3.642
+91.209.94.10 .SOCK. 1 u 52 64 377 211.595 +2.115 1.557
+184.105.182.16 216.218.254.202 2 u 61 64 377 33.015 +4.361 6.329
+144.34.193.110 216.218.192.202 2 u 43 64 377 42.220 +6.381 3.827
+50.205.244.36 50.205.244.28 2 u 43 64 377 75.821 +0.706 3.661
+185.216.212.128 131.188.3.220 2 u 10 64 377 175.342 -2.247 6.280
+206.55.191.142 .PPS. 1 u 14 64 377 76.507 -2.168 4.968
+23.157.160.168 18.26.4.105 2 u 49 64 377 85.071 -2.373 7.619
+159.203.158.197 128.59.0.245 2 u 48 64 377 92.448 +0.481 6.708

NOTE: The "o" means NTPd is using a PPS source and this row is available to adjust the system time. The * is the current "active" reference clock. When using GPS and PPS together NTP will adjust ticks to PPS but pull current time from GPS. The high "offset" on the GPS is caused by tremendous jitter / latency of the UART on the Raspberry Pi 3 since the UART speed is tracked against CPU frequency. That's terrible for precise time keeping. I've configured the Pi to minimize this as much as possible but this is why I recommend using a Pi 4. The rest of the lines are standard NTP server configuration for most Linux distributions and are currently being used just to make sure my GPS source is staying accurate against other sources. If the GPS was to drift too much it would "x" those lines and * a more accurate source. The +'s are candidates if the current reference were to fail.


Re: Can I use a duplexer / triplexer in reverse with 2 rigs and 1 antenna

Howard E. Mahran / WA1HEM
 

This is a blurb from the product listing on  DXEngineering page for the Diamond Triplexer (same specs as the Comet) - "Diamond Antenna Triplexers are used to split or combine HF, VHF, and UHF signals. These triplexers may be used for combining three transceivers or transceiver connectors with different band ranges onto one coax feed line."
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: TEDx Presentation

Robin Amundson
 

Looks interesting.  Thank you Rowland.


On Mon, Nov 16, 2020, 5:36 PM Rowland <rowland.brasch@...> wrote:
This looks like it is going to be a wonderful virtual event.  If you are familiar with TED Talks then you would enjoy this.  Take a look at the website and register if you have any interest.




Thanks,

Rowland


TEDx Presentation

Rowland
 

This looks like it is going to be a wonderful virtual event.  If you are familiar with TED Talks then you would enjoy this.  Take a look at the website and register if you have any interest.




Thanks,

Rowland


Re: Power Supply

Mark McClain
 

Hi Rowland,

Give me a ring.  I might have something for you.

Mark
N6OBY
425-458-4177 



Sent from my smartphone


-------- Original message --------
From: "Rowland via groups.io" <rowland.brasch@...>
Date: 11/16/20 3:50 PM (GMT-08:00)
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Power Supply

Does anyone have an operational 30-50 amp 12vdc power supply they would like to sell for use in a ham shack?

Thanks, Rowland 
--
Thanks,
Rowland


Power Supply

Rowland
 

Does anyone have an operational 30-50 amp 12vdc power supply they would like to sell for use in a ham shack?

Thanks, Rowland 
--
Thanks,
Rowland


Re: Can I use a duplexer / triplexer in reverse with 2 rigs and 1 antenna

Paul Butzi (W7PFB)
 

I am confused.

Comet list the triplexer in the photo as having at least 40db isolation between ports.  3db is a factor of two, 10db is a factor of ten, 40db is a factor of 10,000.

So I am thinking if you run 50w into the 2m port, the most that can appear at the 1.25m port or the 70cm port would be 50w/10000 = 5mw.

If I’m wrong I sure want to know, as I have three radios hooked to exactly this triplexer all routed to a Comet CX-333.  I would prefer not to blow up a radio.

-p W7PFB
73, Don’t forget to smile and have fun!

On Nov 16, 2020, at 10:55 AM, Bob Decker via groups.io <k7bd@...> wrote:

Be careful of transmitting with power, check loss of dB between ports of two rigs.
If transmitting with hand held no problem,, but if 50 watts out from either rig
then could have 12 watt into the other rig depending upon antenna



Comm Academy

Rowland
 

FYI....

Greetings!

The Leadership of the Communications Academy is reaching out to all of our loyal attendees who have made the event such a success in the Pacific Northwest over the last 22+ years, to give you an update on our plans for 2021 and beyond. 

First, thank you for your support, interest, and willingness to grow with us! Without your continued attendance, financial support, and volunteer efforts the event programs we have offered would not have been possible.

As you know, however, we had to cancel the 2020 in-person event. The Communications Academy leadership has used the challenges of 2020 to review how we can best preserve the direction and focus of our event while restricted by the pandemic. Our first task has been to review how we can provide an outstanding online presence that will engage all of you with great content and an opportunity for all of us to connect throughout the year. 

The annual event has continued to evolve by presenting keynotes and seminar tracks that engage beginners, intermediate and advanced users in technologies, served agency support, volunteer management, self-preparedness, and how volunteer and professional communications are used, adapted and improved. All of that will be true of our 2021 virtual Comm Academy. What’s more, as an online event, we will have an unprecedented ability to connect folks from anywhere in the country—or the world!

While we’re not ready to publish the agenda of presentations yet, you can still check out the new website, and if you’re on social media, follow us on TwitterInstagram, and Facebook, and invite your followers to do the same. And while you’re looking at the site—please go ahead and pre-register! We’ll save a spot for you, and keep you informed as the event takes shape.

A name change seemed to be in order reflecting our new approach with our website. The Communications Academy will now be known as The Comm Academy. We all have called it that for years, so why not make it official?

Comm Academy 2021 is currently planned for April 10th and 11th, 2021. More details will be available after January 1st, but hold the dates!

In closing, we are excited to move forward to continue the tradition of Comm Academy. Your engagement, feedback and support are welcome as we look to 2021 and beyond.

 

Sincerely,
The Comm Academy Team
https://commacademy.org



Thanks,

Rowland


Re: Can I use a duplexer / triplexer in reverse with 2 rigs and 1 antenna

Bob Decker
 

Be careful of transmitting with power, check loss of dB between ports of two rigs.
If transmitting with hand held no problem,, but if 50 watts out from either rig
then could have 12 watt into the other rig depending upon antenna