Dayton/Xenia Military Nets – Check Ins Requested

The 51.0 MHz net at Hamvention

12:00     3885                      WW2 pack radio AM Net              WW2 radios like BC-611, DAV, MAB and larger sets like TCS and things all the way up to a GRC-19

13:00     18.157.5               Pack set USB Net                             Back Pack radios of all type, some military but many not.

14:00     51.0                        Cold War FM Net                           Cold war radios like the PRC-6, PRC-25/77 PRT/PRR many non US military sets, I ran a Russian R-107


A 6m handhled painted green or cammo may be OK to check in until you get a PRC25, PRC77, RF1 etc

Apache Helo View
HF NCS OK Copy That go ahead the Bravo station qrz?

TIS Station Will Aid Hamvention 2022 1620 Khz

TIS Station Will Aid Hamvention 2022

(From a press release by Information Station Specialists)

Amateur Radio and Information Radio will again merge at the same venue in Southwest Ohio in 2022. The amateur radio Hamvention, happening (May 20-22) near Dayton, Ohio, will utilize licensed, low power Hamvention Information Station 1620 AM as a new tool to push out to attendees traffic, weather info, parking and event details to attendees, as they approach. The City of Xenia, which hosts the event, is bracing to handle the influx of nearly 30,000 faithful ham radio operators – roughly doubling its population for the weekend. Due to the web of two-lane roads that serves the Greene County Fairgrounds and Expo Center, a sophisticated shuttle-bus operation will be in place to alleviate traffic congestion. Helping the inbound find shuttle lots is one of the key goals of the radio service. The 1620 AM signal will blanket Xenia and will be heard in surrounding Greene and Montgomery Counties, directing approaching attendees to special parking facilities. It is being provided as a service to the Hamvention by Information Station Specialists ( of Zeeland, Michigan, which, this year, will utilize a newly designed, high efficiency/high capacity antenna to transmit the informational signal. The HPR.0990 Antenna and “RadioSTAT” transmitter system will be operated from and available for inspection at Booth 1002 during the event. This year, the company is also introducing the first manufactured 630-meter antenna at their trade booth. The company’s founder Bill Baker not so coincidentally hails from Xenia, Ohio. “I remember the devastation of the April, ’74 tornado,” recalls Baker, “and that is definitely a motivator in what we do every day.” Information Station Specialists’ products are used nationwide to provide critical public information during natural disasters that sever a community’s communications and power.

Can we pick it up in Ontario?

FCC database shows:

Callsign: WPVW207 Licensee: Emergency Operations Center Harrison Twp. Fire Dept. Radio Service: Public Safety Pool, Conventional (PW) City: Kettering, OH Status: Active Grant Date: 05/31/2012 Expiration: 08/26/2022
Site: 1 Address: 1107 Sharewood Ct, East City: Kettering, OH County: MONTGOMERY Coordinates: 39° 41′ 36.9″ N, 84° 8′ 49.7″ W
Frequency: 1.61000000 V
Site: 2 Address: 1107 Sherwood Ct, East City: Kettering, OH County: MONTGOMERY Coordinates: 39° 41′ 36.9″ N, 84° 8′ 49.7″ W
Frequency: 1.66000000 V
Site: 4 Address: 120 Fairgrounds Rd City: Xenia, OH County: GREENE Coordinates: 39° 41′ 59.7″ N, 83° 56′ 19.2″ W
Frequency: 1.62000000 V



By Hamvention Webmaster03/31/2022

  1. I’ve been missing my ham radio friends! It is fun to see them in a Zoom meeting, and it is fun to make a radio contact with them, but walking around the Fairgrounds with them and talking over what has happened since we last saw each other is much, much better. I’ll be able to catch up with news about family, new hobby interests, the latest improvement in our radio shacks, and remember those of us who are not able to be here this year.
  2. I love to go to the Forums and see what new ideas are being discussed. Hearing about the new radios, advanced techniques for contesting, simple ways to solve the problems with POTA set-up, and dealing with the new Solar Cycle to the best advantage will be the main aims of the forums I go to. I even get to moderate a forum devoted to the amateur radio operators who made contributions to the Covid-19 Pandemic response and operation Warp Speed.
  3. I’ll be keeping an eye out for new homebuilt kits, especially those developed in the last 3 years. I enjoy the challenge of soldering up the components (including the tiny surface mount chips) and testing to see if my homebuilt results can match the factory robots at a lower cost.
  4. I’ll be watching the presentations of our youngest hams. I’ll be listening to what Carol Perry’s students present in the Saturday morning Youth Forum, and will try to get some of my grandchildren there to be inspired by these “rock stars” of where the hobby will be going in the next generation. I’ll enjoy seeing what robots they develop, what techniques they are interested in, and wonder if the fastest CW copy at the CWOPS booth will still belong to a young ham.
  5. I’ll be looking for international hams who successfully navigated all of the regulations various governments put up, and worked hard to get to Hamvention. I’ll be stopping by the booths of companies from other countries and thank them for all the hard work they accomplished to get to Xenia, OH instead of just offering their products on the internet.
  6. I’ll be stopping by Contest University on Thursday to encourage folks trying to improve their radio practices, antennas, rigs, and recording DX contacts; thereby improving their contest scores. I will also be stopping by the Four Days in May get together to see what bright (and inexpensive) ways these creative hams have found to improve the weight/power ratio of homebuilt radios.
  7. Lunch each day of Hamvention, I look forward to the great food trucks, with reasonably priced eats, arranged by the Greene County Fairgrounds and Expo Center. I love how the food always seems a cut above typical “fair food”. My favorite is the butterfly pork chop grilled fresh by a member of the Greene County pork producer’s group. I hope they are there again!
  8. I’ll be looking carefully among the assembled throng of amateurs for the Hamvention award winners. I want to be one of the first to congratulate the Technical Award, Special Achievement Award, and Amateur Radio of the Year Award winners. I bet the Club of the Year members will make their presence known far and wide!
  9. I hope to have a few hours to walk thoughtfully through the Flea Market and decide if I have room for in my radio shack for something. I already have several (working) antique radios on my shelves. I’m sure something will strike my interest as an appropriate boat anchor that I need to take home.
  10. As I walk through the inside exhibits, I’ll take a moment to share the excitement of hams that have been away from Hamvention for too long. I’ll ask the commercial vendors if their business at Hamvention is going well. I’ll help someone carry an antenna outside where they are less likely to run into their fellow hams. I’ll stop to take a picture of people with Hamvention antenna hats (and antenna hair!); of pedestrian and bike mobile setups, and of a whole bunch of folks doing nothing more than having fun.

That’s ten great reasons worth being at Hamvention!! and bring $$$$ for the flea market vendor area for pro-loved goodies and new gear to enhance your operations from the commercial vendors.

Understanding NVIS from Rhode & Schwarz

I have no idea why NVIS is still misunderstood and hopefully this will help hams understand how it works and how to exploit it in their comms

NVIS has been and will be a critical methodology to communicate during a war or during emcomm activities.

It was used in D day and preferred by U Boats to communicate back to the Mother ship while avoiding UK listening stations to pick up their traffic.

This is a great method to communicate during local regional nets

Try it and you may like it!

I cant get FT8 to work Sarge can I just use Morse Code?

This image from a US training exercise in North Carolina in November of 2021 shows two Marines with a Communication Emitter Sensing and Attack System II ManPack. U.S. Marine Corps / Cpl. Joshua Davis

Son Please keep trying because if we dont get e RBN report we will be cleaning the barracks with a tooth brush.

Sarge, these bloody drivers are not working after the laptop was updated

Lets SHF with Icom

Icom is showcasing the new radio at Hamvention in May at Xenia

It will cover 2.4 and 5.6 Ghz and will use a radio that looks like the 705

This will prove to be an interesting radio and a chance to experiment and make QSO in the GHz band

Breaker Break!

Central States VHF Society is proud to sponsor the 2022 Spring Sprints!

2022 Information

The Central States VHF Society is proud to sponsor the 2022 Spring Sprints!

Your Central States VHF Society Spring Sprints Committee:

Kent O’Dell, KA2KQM

Mike Metroka, WB8BZK

Jon Platt, W0ZQ

Below are the complete rules for the sprints.

All are welcome and encouraged to participate!

1.0 Contest Purpose: Encourage weak signal VHF/UHF amateur radio operation & have fun.

2.0 Contest Date and Time:

  1. 144 MHz Monday April 11, 2022 0700 – 1100 PM Local
  2. 222 MHz Tuesday April 19, 2022 0700 – 1100 PM Local
  3. 432 MHz Wednesday April 27, 2022 0700 – 1100 PM Local
  4. Microwave Saturday May 7, 2022 0800 AM – 0200 PM Local
  5. 50 MHz Saturday May 14, 2022 2300z through Sunday May 15, 2022 0300z

3.0 Modes of Operation: All simplex modes of operation are allowed. (SSB, CW, FM, AM, Digital etc.) EME via your preferred analog or digital mode is also allowed.

Contacts through repeaters or via satellite are not allowed and will not count as contest contacts.

4.0 Classes: Stations will be classified as either Single Op or Rover. A portable or mobile station that operates from only one grid is considered a Single Op

station. A Rover must operate from at least 2 grid squares. A rover can have more than one operator, but only one operator on the air at a time!

4.1 Power: Power output used for contacts is for informational purposes only. Power output will not be used to separate contestants into different groups or

categories. You may want to place your station information such as rig, output power, antenna etc. in the notes section of your entry. That being said, the

following are the suggested power levels for the HP, LP and QRP groupings on the 3830 web site.

a. QRP: up to 5 watts PEP. (any band)

b. Low Power: up to 200 watts PEP. (any band)

c. High Power: up to 1500 watts PEP. (any band)

d. ** Please note: Rookie Class is for informational purposes only! **

5.0 Exchange: Maidenhead Grid Square. Microwave contest exchange must be the full 6 character grid.

6.0 Reporting: Score will be entered on the 3830 web page in the form provided for the particular sprint. The web page is .

Alternatively, you can postal mail a complete log to the contest chairman in place of a 3830 entry. A 3830 entry is preferred.

Your grid square goes in the web site box for “QTH”. Microwave use 6 digit grid. Rovers use the first grid activated as QTH.

Contestants with winning entries MUST SUPPLY A LOG for review by the sprint chairman to make score official. The Log can be a mailed paper log or

emailed as an attached text file in an ARRL recognized format. (ASCII, .txt, .log, Cabrillo) ARRL log sheets are the preferred paper format.

Your Central States VHF Society Sponsored Spring Sprints Chairman is:

Kent O’Dell, KA2KQM


Or postal mail:

Kent O’Dell


2752 Monument Road

Jasper, GA 30143

The results must be posted on the 3830 web page within 14 days of the event. Paper logs may be mailed to the Sprint Chairman for this event. Mailed logs must

be post marked within 14 days of the event. The Sprint Chairman will post the results from a paper log on the 3830 web page.

6.1 Scoring: 50, 144, 222 and 432MHz , 1 point per QSO on any band. Multiplier would be the total number of grid squares worked for that specific band/


Final score: Multiply QSO points by the multipliers. Each Sprint is scored separately. Distance based total kilometers worked would be an optional entry for

information only. (Distances are not very accurate from 4 digit grids. )

6.2 Rover Scoring: 50, 144, 222 and 432MHz , 1 point per QSO on any band. Multiplier would be the total number of grid squares worked for that specific


If the rover moves to a new grid, then works a station again, a new contact is made for both stations. The new grid will be a new multiplier if the grid was not

worked before.

Rover in EM73 works EM84 as a multiplier

Rover in EM74 works EM84 as a new multiplier

When you move to a new grid, you start over on additional new multipliers.

Final score: Multiply QSO points by the multipliers. Each Sprint is scored separately. Distance based total kilometers worked would be an optional entry for

information only.

6.3 Microwave Scoring: For Microwave, 902 MHz and above use the sum of the distance of all contacts in kilometers. A station worked on a new band is a new contact.

If a rover moves to a new grid (4 digit) he/she can be worked again for another contact.

The 6 digit grid square exchange is required for accurate distance calculation.

Minimum contact distance is 1 kilometer. Thus, contacts within a 6 digit grid count as 1 kilometer.

6.4 Microwave Rover Scoring: Scored like Single Op Microwave, except stations can be contacted again for score after moving to a new grid. Grids activated

are not used directly for scoring and are not reported on 3830 web site.

6.5 The contest scoring is intended to be done mostly on the “Honor System”. But, after the submission period has expired, 14 days after that particular

operating event, the Sprints Committee or Chairman for that particular event will review the top 3 submissions to validate accuracy of the submission. And, the

Sprints Committee or Chairman reserves the right to request to review the actual contest log for any entrant for review if required.

7.0 Rover Operation: A rover must be a portable or mobile station that makes contacts from at least two different Grid Squares. For all sprints, including

microwave the rover must move to a new 4 digit Grid Square.

8.0 Assistance: Use of telephone, packet or internet methods to schedule contacts during the contest is acceptable. The telephone, packet or internet channel

will not be used while the contact is in progress. No “OK I am hearing you now” over the another communications channel. The alternate channel will not be

available in any way to the operator during the contact. The complete exchange of call signs and grids must be accomplished on the relevant amateur radio band.

The preferred scheduling method is on an amateur frequency such as 144.250MHz or 432.090MHz.

See following for 3830 site information. Underline identifies a user entry box.

3830 information 50 to 432 MHz Spring/Fall Sprint

*** Note: Please do not post your entire log into the comments section on the 3830 Scores Web site. With the ability of entrants being able to update and

make changes to their entry, we want to avoid bringing the integrity of the Sprint’s events into question. ***

(band is 50MHz, 144MHz, 222MHz, or 432MHz) for 4 separate contest entries

Submitter’s E-mail Address* _________________ __ Send copy to this email address

Call Used* ______________ Class* ^Single Op/Rover Power ^HP/LP/QRP

Operator Call _____________ Station Call ___________

Op Time (hrs) _____________ QTH* ________________ Club ^(none)

QSOs Mults Total Score Total Distance, km(optional)

band *_____ *______ *________ _______

Comments __________________________________________________(optional)

3830 information Microwave Spring/Fall Sprint

Submitter’s E-mail Address* _________________ __ Send copy to this email address

Call Used* ______________ Class* ^Single Op/Rover Power ^HP/LP/QRP

Operator Call _____________ Station Call ___________

Op Time (hrs) _____________ QTH* ________________ Club ^(none)

QSOs Total Distance, km Best DX QSO, km

*_____ *___________ *__________

Comments __________________________________________________(optional)

Information is included in all forms on 3830 site:

Log submission info

Link to contest rules

Revision 10 by NT4RT and KA2KQM 8/3/21

PRC-25 Its a Prick Radio

Developed in the late 1950s as a replacement for the Korean War-era AN/PRC-10, the AN/PRC-25, or “Prick 25,” incorporated pioneering solid-state circuitry. Additionally, it was water resistant, simple to operate and easy to maintain. Its 50 Hz “squelch feature,” muting routine background noise when a strong signal wasn’t detected, simplified tuning.

The radio had two antennas, a 3-foot standard antenna for most missions and a 10-foot long-range foxhole antenna carried in a canvas bag attached to the radio’s side. U.S. Special Forces and long-range reconnaissance patrols developed improvised “jungle antennas” that extended the range even farther.

The AN/PRC-25 pack consisted of two metal cans. The lower can contained the battery pack; the upper the transceiver. The radio proved to be almost “soldier-proof” in the field. The handset, however, was vulnerable to moisture.

Most RTOs pulled the battery pack’s clear plastic wrapping over the handset, securing it with a rubber band. The batteries were good for two to three hours of heavy use and could last for several days if used sparingly. The radios also could run off a vehicle’s power supply. The battery packs had to be destroyed when expended since the NVA used them in booby traps.

The “Prick 25” entered Vietnam in 1965 and was carried on virtually all land vehicles, riverine craft and aircraft. Gen. Creighton Abrams, deputy commander and then commander of Military Assistance Command, Vietnam, called the Prick 25 “the single most important tactical field item in Vietnam.” Adopted by more than 30 U.S. allies, the AN/PRC-25 remained in service well into the 1980s

Batteries lasted 1 day

I just finsished reading this book and it was a great read of a RTO

Two SF Recon Teams operating 10 miles apart in Laos call out “Prairie Fire” as they are ambushed and outnumbered. One of them is holding their own. The other is running for their lives


  • RT Colorado with Pat Mitchel being the 1-0, Lyn St. Laurent as the 1-1, and David “Lurch” Mixter as the 1-3. RT Colorado is an eight-man team including the five Indigenous troops.
  • RT Hawaii with Les Dover as the 1-0, Regis Gmitter the 1-1, and John Justice the 1-2 (I believe this to be the case with this recon team as far as who was what on the team through natural progression of skills learned in combat.) May not be accurate though, reader and listener take note. Also, it is unknown to me how many Indigenous Troops made up RT Hawaii at that time.

RT Colorado is the team that is running for its life.

RT Hawaii is holding their own.

Both RT’s have called out a “Prairie Fire” in Laos near the Ho Chi Minh Trail and are approximately 10 miles apart as the crow flies.  Prairie Fire was an operation which sent MACVSOG units (Green Beret) into Laos. It was conducted in conjunction with the Marine Operation known as Dewey Canyon in the A Shau Valley south of Fire Base Vandergrift and south of the Rock Pile and Camp Carroll. An emergency call of Prairie Fire made from this area authorized all available air, sea and ground units to respond. All air units were authorized and expected to respond.

Colorado has just been hit by a North Vietnamese platoon of 40 men who desire no more than to wipe out this team completely off the face of the Earth. During this Prairie Fire, David Mixter is killed when he saves Mitchel’s life by shoving him to one side and exchanging fire with an NVA armed with an RPG. Mixter and the NVA exchange fire immediately. The NVA fires his RPG as Mixter fires his weapon. The RPG hits Mixter in the knee area and kills him instantly as the NVA drops dead by Mixter’s return Fire. Here’s a list of call signs for those included in the tape:

  1. Plasticman John Plaster’s personal call sign while on RT 2
  2. White Lead Huey in charge of flying the rescue mission 
  3. Delta Papa Three John Plaster’s call sign while flying as Covey Rider in Bronco
  4. Tango Papa Pat Mitchels call sign as 1-0
  5. Panthers AH-1G Cobras. Also known as “Cobra”
  6. Kingbees H-34 Helicopters usually flown by Vietnamese pilots
  7. Bravo Hotel Ben Het SF camp
  8. Delta Tango FOB at Dak To
  9. Foxtrot Mike FM radio frequency
  10. Victor VHF radio frequency
  11. Uniform UHF radio frequency
  12. Straw Hat/Type Code name for American personnel on a RT
  13. Kilo November Known North. Position is “Kilo November”
  14. Lurch David Mixter’s personnel call sign
  15. Winchester Air assets that are out of ordnance.

PRC-25 RadioThe major field radio of the Vietnam War was the AN/PRC-25. “AN” meant it was a piece of military electronics, not a truck or a weapon or a can of SPAM. “PRC” meant it was a portable radio, “-25” meant it was the 25th one the military had standardized. It was inevitably referred to as a “Prick Twenty-Five” by GIs, or “Prick” for short. The PRC-25 was about the size and weight of a case of soda. With its battery “can” included, call it a case of soda sitting on top of a six-pack. (It actually weighed slightly more than that, 23.5 pounds) There was a handle on each side at the top to carry it. The radio consisted of two parts, both in metal boxes, called “cans.” The upper can held the radio itself, the lower can held its battery pack. Metal buckles held the two together. The radio was tough and would easily survive a 50 foot fall from a helicopter onto a metal-planked runway. You could throw the whole thing in the water for an hour, completely submerged, then pull it out and expect it to work. It could be battery powered for use as a backpack radio, or it could be plugged into an external power source for use in a vehicle or a helicopter.

The extra box included a speaker and a conversion to the vehicle/aircraft’s electrical system.

The operator controls were on top and looked like this:


The two “pre-sets” were done at the base camp. Usually they would be tuned to a selected main frequency and an alternative. The FUNCTION switch, in order, turned ON the radio, then SQUELCH suppressed static. RETRANS was a mode that allowed it to act as a relay for another radio. LITE turned on the little light in the REC-TRANS FREQUENCY channel dial, for night work. The VOLUME control controlled the receive volume. The PRC-25 worked like a car radio, you could dial in any frequency at any time, preset any two, then use the switches to select either of them, usually called a “push.” And maybe then dial in and use a third. The radio was issued with its own packframe.

The radio’s weak point was the communications handset. The handset was like a telephone handset, with a “push to talk” bar. A hook on the back allowed you to hang the handset off your web gear, etc. The handset could simply not get wet. In a wet, humid, country like Vietnam, this was a serious problem. The usual way to deal with this was to put the handset inside the clear plastic bag (usually the one from the radio battery’s packaging), tie it in place with a rubber band, and use it like that. Fording streams, the handset had to be held clear of the water. For all that, the microphone was fairly sensitive and could even be whispered into.

The radio antenna was exactly like a metal tape measure, but the bottom foot or so was a round flexible tube that screwed into the radio. There were actually two antennas, a regular one and a long-range antenna, carried in a canvas bag strapped to the side of the radio The radio had a transmission range, with the short antenna, of about 3-4 miles, but various terrain factors could influence this, of course. It helped to be higher up. The long range antenna was supposed to be good for up to 18 miles.

The rule of thumb was that the battery was good for about a day of casual operation, listening mostly, some occasional transmissions. In a period of intense use, transmitting/receiving all the time, it was good for perhaps 2-3 hours. The way the LRRPs and SF used it, shutting it off and only coming up at scheduled times to briefly transmit or listen, it was good for perhaps four days. Spare batteries were usually kept in a spare .30 caliber ammo can. When expended, the battery pack had to be physically destroyed. Inside were flashlight-type batteries which the Viet Cong could use in booby traps or to ignite bombardment rockets.

The RTO (Radio/Telephone Operator) was usually carefully chosen. He had to be someone with experience, who wouldn’t get rattled under fire. He had to be able to read maps, too. If something happened to the officer, the RTO would effectively command the unit, calling in fires, getting in medevacs, etc. It was also a dangerous job, since the radio antenna said to the enemy “Shoot ME first!” But an experienced RTO became like a “private secretary” to the officer, anticipating what might be wanted and preparing it in advance. At night, he and the officer, the platoon sergeant, and platoon medic slept close together, alternating radio watch, the “Twenty-Five” within reach of all. RTOs within a unit got to know each other too, and formed a kind of bond, since they did all the communications. There was a “status” to being the RTO. All the RTOs administratively reported back to the communications section back at battalion. The commo section also maintained your radio for you, out of the field.

Russian Military SDR Radios

Russian soldiers have deployed with more advanced software-defined radios (SDR) such as the R-187P1 Azart and R-168-5UN-2 tactical radio

AZART-P1 Digital Radios

SDR Provides Secure Communications and Command Process Automation

AZART-P1 digital software-defined radios (SDR)

The tactical radios communicate on frequencies between 27-520MHz at ranges up to 4 kilometres.

R-187-P1E Handheld radio station

Frequency band, MHz


Power output, W

up to 4

Frequency hopping rate, hops/s

up to 20,000

Data transmission speed, kbit/s, max

up to 256

Communication range, km, at least


Transceiver weight, kg


Operating temperature, ºС


R-187VE Vehicle-borne radio station

Frequency band, MHz

1.5…180; 220…470; 550…1,250; 1,850…2.500

Transceiver power output, HF/VHF, W

100/40; 10

Frequency hopping rate, HF/VHF, hops/s


Communication range, HF/VHF, km, max

up to 500 / up to 20

Data transmission speed, HF/VHF, kbit/s, max

up to 9.6 / up to 32,768

PRC-25 from Vietnam still in service

Snowbirds cancel 3 Air shows

Canforce has cancelled the following Air Shows

1 Ottawa, Ontario
16 – 17 Cold Lake, Alberta
20 Terrace, British Columbia
23 – 24 Calgary-Springbank, Alberta
30 – 31 Fort St. John, British Columbia

3 Penticton, British Columbia
5 ‑ 7 Abbotsford, British Columbia
13 ‑ 14 Edmonton-Villeneuve, Alberta
27 ‑ 28 Debert, Nova Scotia

3 ‑ 5 Toronto, Ontario
9 ‑ 11 London, Ontario
14 Tillsonburg, Ontario
17 ‑ 18 Gatineau, Quebec
24 ‑ 25 Mirabel, Quebec


1 ‑ 2 Huntington Beach, California, USA
8 ‑ 9 San Francisco, California, USA
15 ‑ 16 Santa Maria, California, USA