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If newly licensed in the past year, you can join at 50% of the normal dues rate.

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NOTE: The format of this report has been changed for easier viewing of Memberships needing Renewal

Memberships Needing Renewal this Month, and coming up for Renewal in the Next 2 Months)

CallsignFirstLastPaid ThruStatus_1st Join New_1st_
N8BR Bill Bischoff Feb.2024 Renew Jan.2015 . . . . .
KU4GC Dee Ramm Feb.2024 Renew Jul.1997 . . . . .
N7RYN Ryan Reed Feb.2024 Renew Feb.2021 . . . . .
NA4VY David Belt Mar.2024 Current Jan.2001 . . . . .
N4KF Ken Fath Mar.2024 Current Mar.2020 . . . . .
KO4BHX Ben Williams Mar.2024 Current Mar.2020 . . . . .
KO4CSW Robert Furberg Mar.2024 Current Mar.2020 . . . . .
KE4YRB Joline Hodges Mar.2024 Current Feb.1999 . . . . .
KE4NBB Ted Hodges Mar.2024 Current Feb.1999 . . . . .
WA4PSC Howard Hoyt Mar.2024 Current Jun.2010 . . . . .
KM4WHL Sarah Hoyt Mar.2024 Current Feb.2017 . . . . .
N1GMR Kimberley Jackson Mar.2024 Current Feb.1992 . . . . .
KZ1X Steve Jackson Mar.2024 Current Feb.1992 . . . . .
N4JHH Joseph Horvath Mar.2024 Current Aug.2020 . . . . .
W1KES Keith Stouder Mar.2024 Current Jan.2015 . . . . .
K4OGP Chris Lamb Mar.2024 Current Feb.2021 . . . . .
KK4MEG Albert Jones Mar.2024 Current Jan.2015 . . . . .
KQ4GKB Nyi Myint Mar.2024 Current Feb.2023 . . . 1st
K4AAI Jay Zaragoza Mar.2024 Current Jun.2019 . . . . .
W4AG Stan Dicks Mar.2024 Current Mar.2023 New . .
KN4VDO Devin Ceartas Mar.2024 Current Mar.2023 New . .
W3AHL Steve Ahlbom Apr.2024 Current Mar.2009 . . . . .
KM4MDR John Boone Apr.2024 Current Aug.2015 . . . . .
KM4MBG Jack Hill Apr.2024 Current Aug.2015 . . . . .
KF4PAB Lenore Hill Apr.2024 Current Feb.2016 . . . . .
N2XZF Paul Robertson Apr.2024 Current Apr.2014 . . . . .
W4SAR Dave Snyder Apr.2024 Current Oct.1992 . . . . .
KD4YJZ Karen Snyder Apr.2024 Current Oct.1992 . . . . .
N4KW Pete Raymond Apr.2024 Current Apr.2018 . . . . .
KD8FQM Robert Carr Apr.2024 Current Jun.2022 . . . . .
K6LZL Wyatt Underwood Apr.2024 Current Mar.2023 New . .
KR3AM Mark Sidell May.2024 Current Apr.2014 . . . . .
K4SAR Joe Simpson May.2024 Current Oct.1992 . . . . .
KJ4VWG Sam Tannous May.2024 Current Apr.2011 . . . . .
W7GBP Michael D Smith May.2024 Current Jan.2022 . . . . .

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Memberships from Last Month that are Expiring

CallsignFirstLast1st Join Paid ThruStatus__Member_Status_Greeting_
W4BOH Wilson Lamb Sep.2008 Jan.2024 Expiring Hope you renew your OCRA Membership!
WB1AJJ Jonathan Meigs Sep.2020 Jan.2024 Expiring Hope you renew your OCRA Membership!
W4LMW David Wright May.2018 Jan.2024 Expiring Hope you renew your OCRA Membership!

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Memberships that have Expired in the Past 12 Months

CallsignFirstLast1st Join Paid ThruStatus__Member_Status_Greeting_
KW4KZ Charles Anoia Jan.1998 Sep.2023 Expired Hope you renew your OCRA Membership!
KW4KZ/XYL Mary Anoia Sep.2022 Sep.2023 Expired Hope you renew your OCRA Membership!
KN4QCC Onda Blevins Jun.2019 Jul.2023 Expired Hope you renew your OCRA Membership!
KS4VX Roger Boyles Dec.2012 Oct.2023 Expired Hope you renew your OCRA Membership!
W4ORD William Carrington Aug.1992 Jun.2023 Expired Hope you renew your OCRA Membership!
KQ4DCE John Colli Sep.2022 Sep.2023 Expired Hope you renew your OCRA Membership!
W4CFO Jim Davis Oct.2019 Nov.2023 Expired Hope you renew your OCRA Membership!
K2RRT Mark DeWitt Jun.2020 Jul.2023 Expired Hope you renew your OCRA Membership!
WA2JLW Roy Forrest Jul.2012 Sep.2023 Expired Hope you renew your OCRA Membership!
KO4RQN James Gartrell Jun.2021 Jun.2023 Expired Hope you renew your OCRA Membership!
KG4NEL Jim Jingozian Aug.2001 Nov.2023 Expired Hope you renew your OCRA Membership!
AC4RD Ken Kuzenski Oct.2012 Apr.2023 Expired Hope you renew your OCRA Membership!
KV7D Adriano Marquz May.2006 Sep.2023 Expired Hope you renew your OCRA Membership!
KN4BTI Mark McClish Aug.2018 Nov.2023 Expired Hope you renew your OCRA Membership!
KY4HU Charles McComas Oct.2019 Dec.2023 Expired Hope you renew your OCRA Membership!
K4KGM Kevin Medlin Oct.2022 Oct.2023 Expired Hope you renew your OCRA Membership!
KO4TVC Diana Rodriguez Oct.2021 Oct.2023 Expired Hope you renew your OCRA Membership!
KY4SX Domingo Tabangcura Dec.2022 Dec.2023 Expired Hope you renew your OCRA Membership!
KA2DEW Tadd Torborg Jul.2007 Aug.2023 Expired Hope you renew your OCRA Membership!

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Memberships with Dues Current

CallsignFirstLastPaid ThruStatus_1st Join New_Ham_Radio_Interest_Areas_
KF4O Randy Adams Sep.2024 Current Jun.2022 . . . Antennas, CW, Public Service, 40m, 20m, 15m, ares
W3AHL Steve Ahlbom Apr.2024 Current Mar.2009 . . . Antennas, APRS, Auxcomm, Field Day, Nets/Net Control, Public Service, Repeaters, Repeater Crew, SSB, 80m, 40m, 20m, 15m, 10m, 6m, 2m, 70cm, ares
W4OFZ Banks Anderson Sep.2024 Current Aug.2022 . . . Antennas, Nets/Net Control, SSB, 20m, 10m, 6m, 2m
KM4IWI William Bailey Dec.2024 Current May.2015 . . . CW, Attended Meeting to Learn about Ham Radio
N4GF Roger Barr Apr.2026 Current Jul.2015 . . . Antennas, QRP (Low Power), POTA
NA4VY David Belt Mar.2024 Current Jan.2001 . . . Antennas, Field Day, Repeaters, Repeater Crew, SDR, SSB, Vintage Radio, 80m, 40m, 20m, 17m, 15m, 12m, 10m, 6m, 2m, 1.25m
AK4W Ed Best Sep.2024 Current Sep.2011 . . . APRS, Toantennas
KO4DHJ Ken Bigley Jul.2025 Current May.2020 . . . Antennas, APRS, Auxcomm, Digital, Field Day, SSB, 160m, 80m, 40m, 20m, 10m, 2m, 1.25m, 70cm, Attended Meeting to Learn about Ham Radio, ares
KF4WBK Chip Blach Sep.2024 Current Jan.2000 . . .
KM4MDR John Boone Apr.2024 Current Aug.2015 . . . DX, Field Day
KF4COP Jim Boyle Sep.2024 Current Sep.2023 New
KA5JUJ Martin Brody Nov.2024 Current Jul.2016 . . . Antennas, DX, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m
KQ4BYL Jody Browning Jan.2025 Current Jan.2024 New Antennas, CW, Digital, Field Day, QRP (Low Power), SOTA
KF5CYN Derek Burrage Feb.2025 Current Feb.2024 New
KN4DRN Michael Canada Sep.2024 Current May.2018 . . . Antennas, DX, Mobile Ops, Remote Station Ops, Repeaters, Satellite Ops, SDR
KD8FQM Robert Carr Apr.2024 Current Jun.2022 . . . Auxcomm, Public Service, Repeaters
KN4VDO Devin Ceartas Mar.2024 Current Mar.2023 New Antennas, Digital, DMR, Mobile Ops, Repeaters, 2m, 1.25m, 70cm, ares
KN4JYP Kathy Chavis Jul.2024 Current Jul.2018 . . . Antennas
KO4QLU Patrick Connelly Jan.2025 Current Jan.2023 . . . Antennas, Auxcomm, DX, Field Day, Public Service, SSB, 15m, 10m, 6m
W4FK Bob Cook Oct.2024 Current Oct.2021 . . . Antennas, APRS, Auxcomm, CERT, Digital, DMR, DX, Field Day, Foxhunting, Mobile Ops, Nets/Net Control, Public Service, Repeaters, Repeater Crew, Satellite Ops, SDR, SOTA, SSB, Vintage Radio, 160m, 80m, 40m, 20m, 17m, 15m, 12m, 10m, 6m, 2m, 1.25m, 70cm, Attended Meeting to Learn about Ham Radio
KO4RON Ron Craig Jan.2025 Current Jan.2021 . . . Antennas, Digital, DX, Public Service
KI4RAN William Creery Jan.2025 Current Oct.2020 . . .
K4LIF Dan Daniel Aug.2024 Current Jul.2022 . . . Antennas, CW, Field Day, Remote Station Ops, SSB, 40m, 30m, 20m, 17m, 15m, 10m, 6m, 2m, Attended Meeting to Learn about Ham Radio
K1KPD Kevin Darby Jan.2025 Current Dec.2023 New
W4AG Stan Dicks Mar.2024 Current Mar.2023 New Antennas, Auxcomm, Contesting, CW, Digital, Nets/Net Control, SDR, SSB, Vintage Radio, 80m, 40m, 30m, 17m, 6m, ares
WA1QCE Ron DiSalvo Nov.2024 Current Nov.2023 New CW, Digital, DMR, DX, Field Day, Mobile Ops, Public Service, QRP (Low Power), Repeaters, SDR, SOTA, SSB, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m, 2m, 70cm, Attended Meeting to Learn about Ham Radio
KM4NOU Joel Dunn Jan.2025 Current Jan.2016 . . . Mobile Ops, Nets/Net Control, Repeaters, 40m
KR4UB Dan Eddleman Feb.2025 Current Apr.1993 . . . Antennas, Digital, DX, Field Day, Foxhunting, Remote Station Ops, Repeater Crew, SDR, SSB, 40m, 20m, 17m, 10m, 6m, 2m, 70cm, FT-8
KB1WE Wayne Estabrooks Lifetime Feb.2009 . . .
N4KF Ken Fath Mar.2024 Current Mar.2020 . . . Antennas, APRS, Auxcomm, CERT, CW, Digital, DX, Public Service, SSB, Vintage Radio, 160m, 80m, 40m, 6m, ares
WF4ZT John Feole Oct.2024 Current Oct.2023 New
KY4OU Christopher Ferrer Dec.2024 Current Aug.2022 . . . APRS, Auxcomm, Digital, DMR, DX, Mobile Ops, Public Service, QRP (Low Power), SDR, SSB, 20m, 2m, 70cm, ares
KO4CSW Robert Furberg Mar.2024 Current Mar.2020 . . . Auxcomm, CERT, Field Day, Public Service, ares
N1QYW Steve Gartrell Nov.2024 Current Jun.2021 . . . Public Service, 10m, 6m, 2m, 70cm
W4QL Bob Good Jul.2024 Current Jul.2023 New
KX4P John Green Sep.2024 Current Feb.2014 . . .
K2IX Barry Groner Feb.2025 Current Dec.2022 . . . Contesting, CW, Digital, DX, Field Day, SDR, SSB
KD4JWF Jose Guzman Oct.2024 Current Oct.2021 . . . Antennas, Auxcomm, CERT, Digital, DMR, DX, Foxhunting, Mobile Ops, Nets/Net Control, QRP (Low Power), Satellite Ops, SOTA, SSB, 80m, 40m, 20m, 10m, 6m, ares, Go Kits, Raspberry PI
KN4QBZ Fred Gvillo Oct.2024 Current Feb.2020 . . . Antennas, Auxcomm, CERT, Digital, DMR, Mobile Ops, Nets/Net Control, Public Service, SSB, 80m, 40m, 30m, 20m, 17m, 12m, 10m, SHARES, DMR, DSTAR, WinLink
K4ITL Danny Hampton Lifetime Apr.2009 . . .
KM4MBG Jack Hill Apr.2024 Current Aug.2015 . . . Antennas, APRS, Digital, Mobile Ops, Nets/Net Control, Remote Station Ops, Repeaters, Repeater Crew, SDR
KF4PAB Lenore Hill Apr.2024 Current Feb.2016 . . . APRS, Field Day, Repeaters, 2m, 70cm
KE4YRB Joline Hodges Mar.2024 Current Feb.1999 . . .
KE4NBB Ted Hodges Mar.2024 Current Feb.1999 . . .
N4JHH Joseph Horvath Mar.2024 Current Aug.2020 . . . Antennas, APRS, CERT, Digital, DMR, Foxhunting, Mobile Ops, Nets/Net Control, Public Service, Repeaters, Repeater Crew, SSB, Vintage Radio, 10m, 2m, Attended Meeting to Learn about Ham Radio, ares
WA4PSC Howard Hoyt Mar.2024 Current Jun.2010 . . . Antennas, Contesting, CW, Field Day, Mobile Ops, QRP (Low Power), Vintage Radio, 160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m
KM4WHL Sarah Hoyt Mar.2024 Current Feb.2017 . . .
KO4GJO Boyd Hudson Sep.2024 Current Aug.2020 . . . Antennas, Remote Station Ops, SDR, SSB, 40m, 20m, 10m, 6m, 2m, 70cm
Greg Isley Greg Isley Jan.2025 Current Jan.2024 New
N1GMR Kimberley Jackson Mar.2024 Current Feb.1992 . . .
KZ1X Steve Jackson Mar.2024 Current Feb.1992 . . .
KM4WXW Jeffrey Jagoda Dec.2024 Current Nov.2018 . . . Auxcomm, Field Day, Public Service
KI4MXP Gerald Jones Aug.2025 Current Nov.2006 . . .
KK4MEG Albert Jones Mar.2024 Current Jan.2015 . . .
KQ4JDJ Jere Judd Feb.2025 Current Feb.2024 New
K4OGP Chris Lamb Mar.2024 Current Feb.2021 . . .
KO4ICM Doug Largent Mar.2025 Current Nov.2020 . . . CW, QRP (Low Power), 40m
KO4TXN Steve Lovett Sep.2024 Current Jun.2020 . . .
KK4NNQ Mark MacAllister Aug.2024 Current Aug.2013 . . . APRS, Auxcomm, CERT, Digital, DMR, Mobile Ops, Nets/Net Control, SOTA, 2m, 70cm
WQ8U Mac Macaulay Apr.2025 Current Mar.2022 . . . CW, Vintage Radio, 80m, 40m, 20m, 15m, 10m
KK4VOU Ted May Jan.2025 Current Dec.2023 New Antennas, CERT
N1LN Bruce Meier Feb.2025 Current Jul.2006 . . . Antennas, Contesting, CW, DX, Field Day, Nets/Net Control, SSB, Vintage Radio, 160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m
N1YXU Laurie Meier Feb.2025 Current Jul.2006 . . . CERT, Field Day, Nets/Net Control, Public Service, ares
KQ4IWB Mike Merzke Jul.2024 Current Jun.2023 New Attended Meeting to Learn about Ham Radio
KO4UFU Eldon Miller Dec.2024 Current Dec.2021 . . . Antennas, 10m, 2m, 1.25m, 70cm, Attended Meeting to Learn about Ham Radio
KK4VUR John Mitchell Jan.2025 Current Jan.2017 . . . SDR
KQ4GKB Nyi Myint Mar.2024 Current Feb.2023 . . .
W4AEN Ed Neely Oct.2024 Current May.2019 . . . Antennas, APRS, Auxcomm, CERT, Digital, DMR, Field Day, Foxhunting, Mobile Ops, Nets/Net Control, Repeaters, Repeater Crew, SDR, SSB, 80m, 40m, 20m, 10m, 6m, 2m, 70cm
KJ4TTU Steve Newton Jan.2025 Current Jan.2021 . . . Antennas, Auxcomm, CERT, Digital, DMR, Mobile Ops, Repeater Crew, SDR
KG4JGJ Joseph Puentes Jul.2024 Current Jun.2021 . . .
WB4OSU Sherri Rapp Nov.2024 Current Dec.2015 . . . Digital, DX, Field Day, Satellite Ops, 80m, 40m, 20m, 17m, 10m, PSK-31, FT-8, RTTY, FELD HELL, Winlink
N4KW Pete Raymond Apr.2024 Current Apr.2018 . . . Antennas, Contesting, CW, DX, Field Day, Repeater Crew, 160m, 80m, 40m, 30m, 20m, 17m, 15m, 10m, antennas
KN4VXC Leo Reynolds Jun.2024 Current Aug.2019 . . . Antennas, QRP (Low Power), Vintage Radio, 160m, 80m, 40m
KB3ZD Glenn Ricart Mar.2025 Current Feb.2024 New
N2XZF Paul Robertson Apr.2024 Current Apr.2014 . . . Antennas, DX, Field Day, Repeaters, Repeater Crew, 20m, 10m
KC1TWR Tim Rodgers Mar.2025 Current Mar.2023 New APRS, Auxcomm, CERT, Field Day, Foxhunting, Mobile Ops, Nets/Net Control, Public Service, Repeaters, 40m, 20m, 10m, 6m, 2m, 70cm, Attended Meeting to Learn about Ham Radio, ares
KK4JGT Terry Schmidt Feb.2025 Current Jan.2019 . . . Auxcomm, CERT, Digital, DMR, 2m, 70cm, ares
N0US Paul Schnoes Sep.2024 Current Aug.2023 New
KD4UCZ Charles Schott Jan.2025 Current Sep.2019 . . . Antennas, Digital, Satellite Ops, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m, 2m, 70cm
NE4U John Shadle Lifetime May.2007 . . .
K4BMW Brian Shanahan Jan.2025 Current Jun.2020 . . .
KO4SZE Bob Shelton Sep.2024 Current Sep.2021 . . . Antennas, Field Day, Foxhunting, QRP (Low Power), Satellite Ops, 80m, 40m, 20m, 15m, 10m, 2m
KR3AM Mark Sidell May.2024 Current Apr.2014 . . .
K4SAR Joe Simpson May.2024 Current Oct.1992 . . . Antennas, Auxcomm, Field Day, Foxhunting, SSB, 15m, 10m, ares
W7GBP Michael D Smith May.2024 Current Jan.2022 . . . Auxcomm, CERT, DMR
W4SAR Dave Snyder Apr.2024 Current Oct.1992 . . . Antennas, APRS, Digital, Field Day
KD4YJZ Karen Snyder Apr.2024 Current Oct.1992 . . . CERT, Field Day, Nets/Net Control, Public Service, 10m, ares
KK4RRT Michael Stein Sep.2024 Current Feb.2021 . . . Auxcomm, CERT, Mobile Ops, QRP (Low Power), 20m, 10m, 2m, 70cm, ares
W1KES Keith Stouder Mar.2024 Current Jan.2015 . . . CW, DX, Field Day, SOTA, SSB, 40m, 20m
KJ4VWG Sam Tannous May.2024 Current Apr.2011 . . . Antennas, APRS, Contesting, CW, Digital, DMR, DX, Field Day, QRP (Low Power), Remote Station Ops, Repeaters, SDR, SSB, ares, ADS-B, Radio Astronomy, NEC2 Internals
KN4ZHP Mike Thorn Jan.2025 Current Jan.2020 . . . Antennas, APRS, Auxcomm, CERT, Digital, DMR, DX, Nets/Net Control, Public Service, QRP (Low Power), Repeaters, SDR, SOTA, MARS
KN4VXB Aurora Toennisson Jun.2024 Current Jun.2019 . . . APRS, CERT, Public Service, Attended Meeting to Learn about Ham Radio
K6LZL Wyatt Underwood Apr.2024 Current Mar.2023 New Antennas, APRS, Digital, DMR, DX, Field Day, Nets/Net Control, Public Service, Repeaters, 80m, 40m, 2m, 70cm, Attended Meeting to Learn about Ham Radio
N3LTV Doug Wall Jul.2024 Current Jul.2022 . . . Antennas, Auxcomm, Digital, Nets/Net Control, 80m, 40m, 20m, 15m, 10m, 2m, 70cm
N4SJW John Welton Jul.2024 Current Sep.1992 . . . Auxcomm, CERT, Digital, DMR, Repeaters, Repeater Crew, Allstar
KN4EOO Rick Wenklar Aug.2024 Current Aug.2017 . . . APRS, Auxcomm, CERT, DMR, Mobile Ops, Public Service, ares
KA5ETS Douglas White Jul.2024 Current Aug.2011 . . . Antennas, Auxcomm, CERT, Contesting, CW, Digital, DX, Field Day, Nets/Net Control, Public Service, QRP (Low Power), Remote Station Ops, Repeaters, SDR, SOTA, SSB, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m, 2m, 70cm, Attended Meeting to Learn about Ham Radio, ares, antennas, FT8
KW4JY Calvin Whitt Sep.2024 Current Aug.1992 . . . Antennas, Digital, DX, Remote Station Ops, SDR, SSB, 160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m, digital, antennas
KO4BHX Ben Williams Mar.2024 Current Mar.2020 . . . Antennas, APRS, CW, Digital, DX, Field Day, Foxhunting, Mobile Ops, Nets/Net Control, QRP (Low Power), Remote Station Ops, Repeater Crew, Satellite Ops, SDR, SSB, Attended Meeting to Learn about Ham Radio
K4FD Dan Wise Nov.2024 Current Nov.2019 . . . Packet Radio
JRW-01-93 Jason Wolonick Oct.2024 Current Nov.2021 . . . Repeaters, Repeater Crew, 2m, 1.25m, 70cm, ares
KQ4PEC Mike Woods Mar.2025 Current . . .
W4KIL Andy Yates Feb.2025 Current Oct.2008 . . . Antennas, CW, Field Day, 160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m
AI4MW Tommy Yeager Mar.2025 Current Jan.1999 . . .
K4AAI Jay Zaragoza Mar.2024 Current Jun.2019 . . .

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Recent Posts

Tri-County Repeater Coverage Maps available on OCRA-DFMA groups.io

The repeater reach-ability testing during several recent OCRA Auxcomm nets on the 442.150 repeater and the demo presentation at the April 10 OCRA meeting (see Youtube video) illustrates many examples of how the topography from your location to a repeater site greatly affects the ability to communicate. 

Without quantitative tools to analyze the issue, it can be a difficult decision on how to fix the problem. What is the problem? What will be the most effective fix?

Repeater topographic coverage maps can help answer questions specific to your location.

To take advantage of these maps you will need to do 2 things:

  1. Download and install the Google Maps application from this URL: https://www.google.com/earth/versions/#earth-pro  
  2. Download the Tri-County Repeater Coverage maps  located on the OCRA -DFMA groups.io file storage area.

The URL link below contains repeater coverage topographic mapping for the 442.150, 145.450, 147.225 and 145.230 repeaters. More repeaters will be added in the future.

Three maps are available for each repeater to show coverage that can be expected with the typical HT, Mobile or Fixed base (home) installations.

Downloading the Repeater Coverage Maps:

You need to use your OCRA-DFMA groups.io login ID and password to access the files area shown below.

Click on this URL https://groups.io/g/OCRA-DFMA/files/Repeater%20Coverage  to go to the file storage area. 

When you click on the “Tri-County Repeater Coverage_V3C.kmz” file link as shown below, the file will download onto your computer, per your browser’s download settings.

Using the Google Earth Pro Application:

Click on the Tri-County Repeater Coverage_V3C.kmz file to open it with the Google Earth Pro application.

Several Google Earth features need to be active so you can select the coverage maps available for the repeater of interest.

The sidebar on the left will be needed to navigate the maps. If not visible, click on the command line “View, Toolbar” to turn it on.

Click the caret symbol to expand the settings and the sub-directories within the .kmz file.

You will want to turn on certain overlays by placing check marks for the applicable blocks as indicated below.

for the “Color Legend” (indicating signal strength into the repeater; more on this later.

“Key Locations” and “Other Locations” will show the repeaters and QTH locations for over 100 hams in the area.

Place a check mark next to the repeater map and station type of interest. In this example, the check mark is for the  442.150 repeater being used by a portable/home station.

Only 1 repeater map/station type should be turned on at a time.

Note:

  • A portable station is one that could be set up for emergency communications and is equivalent to a home station using a 30-50 watt mobile radio,  and a small tower or building mounted fixed base antenna up 20 feet off the ground.
  • The 147.250 file name below is a typo. It is the 147.225 DFMA repeater.

The maps for our region, created with Radio Mobile – RF propagation simulation software , shows the significant role terrain blocking plays in repeater coverage in our in our area. The color indicated at the selected station’s location indicates the expected signal strength back into the repeater. 

  • Red (-77dBm strength back to the repeater)  is solid copy, no noise or fading communications)
  • Yellow (-87dBm), Green (-97dBm) Good communications, may have some occasional noise down in the green areas
  • Turquiose (-107dBm), Blue (-117dBm) Will be unpredictable. May work at times reasonably OK with noise & dropouts or not at all.
  • White (on the color legend) (-117dBm)  No communications. These areas will simply the Google Earth imaging without any coloring.

Common radio setups used for repeater communications are the basis for the 3 topographic map runs made for each repeater.

  • 5 watt HT with the standard rubber duck antenna
  • Vehicle with a mobile radio with 30 UHF, 50 watts UHF output and vehicle antenna
  • Fixed based installation using a mobile radio and a base station antenna higher off the ground.

Additional Information:

Knowing the Effective Radiated Power (ERP) that your radio setup is providing back into the repeater can provide a more tangible perspective. 

  • The ERP Calculator  results below reveals a little better the actual radiated power levels than just considering the antenna gain expressed in decibels. 
  • HT 5 Watts with standard rubber duck antenna loss (VHF -6dBi, UHF -3dBi)

    •  VHF 5W ERP 0.766 watts
    •  UHF 5W ERP 1.53 watts 
  • Vehicle radio and external mounted antenna (e.g. Comet SBB14 VHF 3.5dBi UHF 6.0dBi gain)

    • VHF 5W   ERP 6.83 watts
    • UHF 5W   ERP 12.14 watts
    • VHF 50W ERP 68.25 watts
    • UHF 30W ERP 72.82 watts
  • Fixed based installation again using a mobile radio and fixed base antenna (e.g. Comet GP-9N VHF 8.5dbi UHF 11.9dBi gain)

    • VHF 5W   ERP 21.58 watts
    • UHF 5W   ERP 47.22 watts
    • VHF 50W ERP 215.84watts,
    • UHF 30W ERP 283.32 watts 

Coax loss with also have to be considered for the vehicle and fixed based antennas.

I wish to express my thanks and gratitude to Steve, W3AHL for sharing his valuable knowledge and experience with the Radio Mobile RF propagation application.

Dan, KR4UB

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