Welcome To The
470 Amateur Radio Group Of
East Tennessee
The 145.470 (-) (optional decode tone: 118.8 Hz) repeater is located NORTH of the Knoxville area - high atop Cross Mountain!
The 145.47 repeater celebrates 46 years of service in 2026!
To Go To Other Pages Click
On The 3 Dots On The Top Right !
Info On The 470 ARG
About The 145.470 Repeater
The 145.470 (-) (optional decode tone: 118.8 Hz) repeater is located NORTH
of the Knoxville area - high atop Cross Mountain!
The 145.47 repeater celebrates 40 years of service in 2021!
Please note: If you hear a "beep" tone at 15-second intervals, this indicates that the repeater is on emergency battery power.
When this repeater was first put into service at this location, it was hoped that it would cover an area just to the north of Knoxville to up near the state line... however... that was not to be the case. As it turns out, we were pleasantly surprised that this machine has far exceeded those boundaries!
In reality... this repeater covers a wide and rugged area of the Southeastern United States! Many regular users of this machine do so routinely from Tennessee, North Carolina and Kentucky!
Although many East Tennessee hams use this machine every day, we have been known to make contacts in Virginia... Georgia and even parts of Ohio!
Some of the equipment that makes up this machine includes:
- General Electric "Mastr II" VHF repeater with internal controller
- Autocode CW ID unit
- Celwave (Phelps Dodge) PD-497 6-cavity pass/reject duplexers
- Sinclair SD-224 4 element folded dipole VHF antenna
- 1/2 inch Andrew "heliax" transmission line
- Motorola "Maxtrac" UHF mobile transciever for remote control
- Broadcast Tools DTD-16 DTMF decoder for remote control
- Four (4) FP-AGM24 backup batteries and battery tender (charger) NOTE: If you are using the 145.47 repeater, and hear a "beep" tone at 15 second intervals, it means that the electrical power is off and the battery backup is active.
WB4GBI Repeaters
.Repeaters
53.150 144.940
145.170
145.430 145.470
146.625 146.730
146.850 146.940
147.075 147.150
224.340
443.300
927.0625
Check Out The ARRL Newsline
Amateur Radio
Information
At It's Best
*********
https://www.arnewsline.org/
Since 2007
Thanks To Tim Berry WB4GBI For His Support and Dedication To AmateurRadio & All Our Great Members Who Have Supported The 470 ARG
The 470 ARG was created back in 2007 at the Ten Tec Hamfest, a group of folks from several states wanted to get together, once a week and see how each of us was doing, talk about amateur radio, new gear we may have got, and just good old QSO's while enjoying the fellowship between us. It started out with 14 of us and since then has had over 131 check in's on the net, with 2.9 K members and growing every day. Tim Berry WB4GBI.
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AMATEUR RADIO LINKS
WB4GBI WEBSITE https://wb4gbi.com/
lUNCH bUNCH WEBSITE https://www.lunchbunch.net/
SEVIER COUNTY ARS & HAMFEST https://www.seviercountyars.info/#
MIKLOR RADIO INFO HOMEPAGE https://www.miklor.com/
PRACTICAL ANTENNAS https://practicalantennas.com/
DIXIE TRADERS NET https://www.dixietraders.net/
THE WIREMAN https://thewireman.com/
CHAT RADIO JIM GIFFORD https://www.chattradio.com/
RADTEL RADIO'S https://www.radtels.com/
RETEVIS
https://www.retevis.com/shop/ecs-ham-two-way-radios
RADIODDITY https://www.radioddity.com/
MAXTALKER RADIO'S https://maxtalkerradio.com/
TALKPOD RADIO'S https://talkpodonline.com/
BAOFENG RADIO'S https://www.baofengradio.com/
JUCJET RADIO'S https://www.baofengradio.com/
DX ENGINEERING https://www.dxengineering.com/
GIGAPARTS https://www.gigaparts.com/
YAESU https://www.yaesu.com/
ICOM https://www.icomamerica.com/
KENWOOD RADIO https://www.kenwood.com/usa/
TIDRADIO https://tidradio.com/
SURECOM TEST EQ https://www.surecom.com.hk/
BTECH RADIO
https://baofengtech.com/?srsltid=AfmBOoo9MHIpdvvza9LZOg
BAOGMQzj1dv3cvm99s4JdyV7SOIQI6_8Pn
MY GMRS WEBSITE https://mygmrs.com/
R & L ELECTRONICS https://www2.randl.com/index.php
HRO ELCTRONICS https://www.hamradio.com/
MTC HAM RADIO https://mtcradio.com/
ISS INFO & CONTACT
https://www.ariss.org/contact-the-iss.html
CHIRP PROGRAMING SOFTWARE
https://chirpmyradio.com/projects/chirp/wiki/Download
RADIO REFERANCE https://www.radioreference.com/
RACK CLUB https://www.w4bbb.org/
ARROW ANTENNA'S https://www.arrowantennas.com/
ABBREE ANTENNA'S
https://www.abbree.cn/product-category/antenna/
JETSTREAM ANTENNA'S PLUS
https://www.jetstream-usa.biz/jet/index.php?main_page=index&cPath=2
EAST TN SKYWARN https://etskywarn.com/
COVERS ALL DISTRICTS
KEEPING YOUR EQUIPMENT SAFE FOR USE
How to use an SWR meter step-by-step
- Insert the meter between radio and antenna: TX → “Transmitter” port, Antenna → “Antenna” port.
- Choose test channel/frequency: CB Ch 20 (27.205) is common. For ham, use a clear spot in-band.
- Set power to low or medium. Use AM/FM carrier or a brief “tune” power.
- Key up shortly and read SWR. Repeat at low and high ends of the band.
- Tune the antenna: If SWR is lower at the low end than the high end, shorten the antenna. If lower at the high end, lengthen it.
- Re-check after each small adjustment until readings are at or below your target.
Good SWR targets and what they mean
- ≈1.0–1.3:1 Excellent.
- ≈1.5:1 Good. Little power lost.
- ≈2.0:1 Borderline. Investigate coax, connectors, ground, and antenna length.
- >2.5:1 Poor. Find and fix the mismatch before heavy use.
How to read a cross-needle SWR meter
- Two needles: one shows forward power (FWD), the other shows reflected power (REF).
- Intersection: where the needles cross, read the SWR scale. The meter computes the ratio for you.
- Rule of thumb: bigger gap between FWD and REF → lower SWR. If REF rises close to FWD, SWR is high.
- I USE SEVERAL TYPES, BOTH ANALOG AND DIGITAL, I ALSO HAVE A FIELD STRENGTH METER, FREQUENCY COUNTER'S, COMPONET CHECKERS,
- MOST OF MY EQUIPMENT IS SURECOM ..
- THE SW32V ANALOG, SF103 FREQ COUNTER, SF401 FREQ COUNTER, SURECOME SIGNAL STRENGTH METER,A SW33 MARK II , SW112 , SSEEII NANO VNA,SPECTRUM UNIT,
- I DO A LOT OF TESTING AND THE UNITS ABOVE ARE NOT THAT EXPENSIVE !
- ALL CAN BE FOUND AT AMAZON
- SO YOU KNOW WHERE I GOT,
- I DO RECOMMEND THE ABOVE TEST EQUIPMENT..
- CHECK YOUR EQUIPMENT, RADIO'S, ANTENNA'S TO MAKE SURE YOUR EQUIPMENT IS PROPERLY WORKING !
- SWR & WATT Meters are not that expensive, I use mostly the Surecom Brand for my test equipment, the list below was purchased at AMAZON
- SURECOM SW-32UV SWR & WATT METER
- $55.00
- SURECOM SW-112VU SWR& wATT METER
- $37.00
- SURECOM SF103 FREQENCY COUNTER
- $54.00
- SURECOM SS10 SIGNAL / FIELD
- STRENGTH METER
- $32.00
- XRAS 10 WATT DUMMY LOUD
- $17.00
- XRAS 15 WATT DUMMY LOAD
- $18.00
- XRDS 25 WATT DUMMY LOAD
- $20,00
- XRDS 50 WATT DUMMY LOAD
- $28.00
- XRDS 100 WATT DUMMY LOAD
- $43.00
- This is a few of my test equipment
- and highly recommend these for
- your HAM Shack
- The Dummy Loads I Try To Keep Just Above The Stated Output Wattage
- Is Why I Have Several
- Accurate And Priced Right
SS-10 SURECOM FIELD STRENGTH METER
The SS-10 Field Strength Meter is ideal for reading relative field strength from your antenna.
It is a compact unit that fits in the palm of your hand and can be taken anywhere.
The best part of using it is that you now can tell if your antenna is radiating or not by simply holding the unit near your antenna and adjusting the sensitivity. Also, by taking measurements, you can find out relatively how strong your antenna field is. Operation The SS-10 Field Strength Meter is very simple to use. It requires no power because your antenna field provides the power necessary to run the meter.
Simply raise the single whip antenna on your unit, stand several feet away, and adjust the sensitivity knob on the front, it’s that easy.
You want to ensure that the whip antenna is parallel with the polarity of the antenna you are reading.
Now you can read the relative field strength of your antenna.
COPY & PASTE THE lINK BELOW TO
SEE FULL DETAILS !!
https://www.surecom.com.hk/ss10
I USE THIS A LOT TESTING ANTENNA'S !
SOLDERING
What is soldering?
What is soldering?
Soldering is the joining of two metal surfaces mechanically and electrically, with the use of metal called solder. Solder secures the connection so it doesn’t break loose due to vibration or other mechanical forces. It also provides electrical continuity, so that the electronic signal can travel through the connection without interruption. The solder is melted using a soldering iron. Flux is used to clean and prep the surfaces, which allows the melted solder to flow (or “wet”) and bond with the metal surfaces.
THE 15 RULES FOR SOLDERING ARE SHOWN ON THE LINK BELOW, JUST COPY AND PASTE TO YOUR SEARCH BAR
https://blog.sra-solder.com/how-to-solder-electronics/page/2
Gallery Of HT Radio's To Have
These Are A Few That I Would Highly Recommend & Have Tested !
These I Have Purchased From AMAZON
Click On The Pic To Expand
MaxTalker P15 36.99 - 999CH 10 Watt PIC18
MaxTalker MTUV5R 39.99 2pk 39.99- 999 CH PIC17
UV32 35.99 - 999 CH 10 Watt PIC16
UV28 39.99 - 1000 CH 10 Watt PIC15
Radtel RT920 56.00 960 CH 10 Watt PIC14
Radtel RT900 25.99 - 256 CH 8 Watt PIC13
Radtel RT630 59.99 - 256 CH - 10 Watt PIC12
Radtel RT730 39.00 -199 CH 10 Watt PIC11
Radtel RT890 30.99 - 999CH 5 Watt PIC10
Radioddity GS-10B 39.99 - 256 CH PIC9
Retevis HA2 94.99 -1024 CH PIC8
UV7B 25.49 - 1000 CH 10 Banks PIC7
UV10R MAX 2PK 58.79 - 999 CH 10 Watt PIC6
UV22 34.99 -999CH PIC5
Retevis RT85 29.99 - 200 CH 5 Watt PIC4
TalkPod A 36 40.49 - 999 CH PIC3
UV21R 24.99 - 999 CH PIC2
UV17R 23.01 -- 999 CH PIC1
Radtel 910 / 910B 29.99 - 960 CH 5 Watt No Pic
You Can Set Up With Chirp Or Factory Software
I would be happy to progrm the above, and any other not listed,
Analog Only At This Time ,Drop Off
Tagline
AURSINC NanoVNA-H Model
Vector Network Analyzer 9KHz -1.5GHz Latest HW V3.7 HF VHF UHF Antenna Analyzer, Measuring S Parameters, SWR, Phase, Delay, Smith Chart
About this item
- [UPGRADED NanoVNA-H] New HW Version V3.6. It is upgradeable as new firmware is developed. With MicroSD card port now can have the measurement data or the screenshots saved in the it at anytime. Added battery circuit management, more secure. Redesigned PCB, you can connect to mobile phone with Type C-Type C cable (original PCB needs OTG cable), see a clear HD image on your phone. Added a ABS case, which is protective and dust-proof. Disply: 2.8 inch TFT (320 x240)
- [IMPROVED FREQUENCY ALGORITHM] The improved frequency algorithm can use the odd harmonic extension of si5351 to support the measurement frequency up to 1.5GHz. The 50K-300MHz frequency range of the si5351 direct output provides better than 70dB dynamic, The extended 300M-900MHz band provides better than 60dB of dynamics, and the 900M-1.5GHz band is better than 40dB of dynamics
- [MULTIPLE FUNCTIONS] The default firmware main function is used for antenna performance measurement. The TX/RX method can measure the complete S11 and S21 parameters. If you need to obtain S12 and S22, you need to manually replace the transceiver port wiring. The CH0 output level is increased to 0dBm when using the fundamental wave, resulting in more accurate reflection measurement
- [SUPPORT ANDROID PHONE & PC SOFTSARE CONTROL] Designed a practical and simple control application on PC, you can download touchstone(SNP) files for radio design and simulation software. There is a PC interface that adds functionality and lets you work interactively on a bigger screen. Supports time domain analysis function (TDR). Compatible with most Android mobile phones, convenient for connecting to mobile phones. Support Windows Computer Control
- [STRONG AND SECURE POWER SUPPLY] This VNA is battery powered or USB powered. Built in 650mAh battery, could work for 2 hours continuously. For longer measurement time, kindly connect an external power source. The product interface displays battery usage, providing a clear understanding of the power status
- AMAZON
