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Ham Member Lookups: 8040

 

New ham(now general AKA Tim), got my technician license Sep. 2011but has been a long time shortwave listener since age 5.

Really enjoying this amazing hobby and willing to meet more people on the air.

Recent Project: WB8WGA simple APRS TNC

Simple PIC16F88 based TNC. Has kiss mode converse mode can be set as a Stand alone APRS TNC or a APRS tracker.

Both function tested and works good. It even has tempareture sensor!

KISS MODE with UIview 32 

Tracker Mode shown on aprs.fi

 

Recent built:

DH8BQA GPS display, Shows time, date, grid square, coordination, heading, speed, elevation, GPS signal quality, and number of satellites it locks on. Also has a bluethooth serial port that can be paired up with mobile devices. Really neat tool to have when doing rovering or portable VHF UHF weak signal operation. 

Sound card interface with vox keying function, I use 600ohm to 600ohm audio transformer and optocoupler to isolate the computer from radio, just like how easy digi works. this circuit is combined with a $3 generic usb sound card and using the 5 Volts from the usb sound card to power the vox circuit, thanks for G4ILO's online article. Then I added a unkey time delay to the circuit so for a short period of time the radio will stay on TX. PTT is isolated from the board through a optocoupler (PC817).  Here's a demo video of the vox circuit.

 

Recent built: Home brew Z-match tuner with SWR sensing Circuit ( Stockton type coupler), C2 has a 6:1 reduction gear for tuning percision.

Forwarded and reflected power sensing circuit,

New project finished. DTV log periodic dipole array antenna. Can be used as a transmit antenna on 440 ham band. SWR<1.2:1

About 5dbd gain.

Working N3RG on 1296 MHZ.

Recent built: DH8BQA sequencer

Recent built:�

Homebrew S-match Balanced ATU 

  

Homebrew 2X 25 ele 1296 loop yagi stack with home brew power divider.

My main interests in HAM Radio are VHF/UHF Weak signal and homebrew antennas also HF QRP.

Recently I put up a vertical multiband vertical sloping dipole for HF band 40m-10m with a tuner.

The vertical radiator (20FT long) is holding by a 31ft fiber glass pole with the other leg sloping down to the ground.

The antenna is fed by homebrew 12 FT open wire line, open wire line goes into my homebrew 1:1 current balun and then into a manual tuner.

The antenna will tune up from 40m to 10m (reasonable radiation pattern and take off angle for DX), 80m can be tuned but the antenna is too short to work anything on 80m.

40m mono band antenna is a EFHWA (end fed half wave) about 18-20ft off the gournd. Matching unit is also a homebrew unit.

I am building up my high UHF /microwave equippment little by little but it is surely a expensive hobby hi.

Rigs are Yaesu ft-847 + 222 mhz transverter + TE systems amps.

Yaesu Ft-817 for operatingQRP, FT-450 for casual HF operation. Not exactly a Yaesu fan I do own Kenwood hi hi

6m antenna is a homebrw moxon which I modified the original design to make it fit in tighter space in the attic.

2 meter antenna is a homebrew 5 elements 28ohm DK7ZB yagi.

For 432 i am using a pair of homebrew 10 element beams with homebrew power splitter.


   

222mhz Antenna is a homebrew 6 element yagi which I built and designed from ground up.

Wire HALO antennas for 10/6.

My attic anttena farm.

  

Slowly starting getting on CW. Yes 5-8 wpm copy speed. so if you hear me PSE QRS TNX

The key is a chinese military surplus straight key Model K-5 made in 1987.

The DX20-1 Chinese military surplus mini Straight KEY, I am impressed by this nice little key.

Made in the late 60s, on the package it even got culture revolution era slogans.

Upgraded VHF UHF antennas 6 ft boom

Improved elment mounting using 1/2" delrin rod milled and drilled for 1/4" element and 3/4" square boom.

Yield a strenghtened mounting point.

and DK7ZB Matching.

Modified DK7ZB Dual band YAGI for FM repeaters/packet. 50OHM design has a good bandwidth can be alsoused for portable weak signal work.

Now just have my PACKET Radio station installed. Kenwood TM-271a modified with TNC

Data port + TNC-X kit that I put together.

Packet station antenna is homebrew end fed vertical. Uses pi impedance matching network.

Can't help myself to snap this picture while I am in the city lol.

QSO What Festival?

6882713 Last modified: 2015-11-26 05:05:16, 8703 bytes

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QRZ Logbook Summary for - KD2AVU
Latest Contacts for KD2AVU at QRZ.com
dedateband mode grid Country op
N9PYR 2016-01-10 80m JT65 EN62bu United States David R Paradise Jr
KM4AJW 2016-01-08 80m SSB EM95iq United States WILLIAM D BROOKS III
WB7PTC 2016-01-07 40m SSB DM33sm United States JAMES R HURST SR
KK4RAG 2016-01-07 40m SSB EL96VQ99 United States MICHAEL A LOPEZ
AJ0Z 2016-01-02 40m JT65 EN11we United States ANTHONY L NUNN
AE7JP 2015-12-24 15m JT65 DM33WI17 United States Andrew J Puza
ZS6ZP 2015-12-24 15m JT65 KG43bw South Africa Eric Krebser
PY7ZZ 2015-12-24 15m JT65 HI21nx Brazil FRED SOUTO MAIOR
WB4CIW 2015-12-15 80m JT65 DM79cf United States Frank P Lambert IV
DK1MAX 2015-12-15 80m JT65 JN58sp Germany Max Wild
K3MTG 2015-10-13 2m CW FM19xt United States DONALD W GIBBS
PU2KKE 2015-06-05 10m SSB GG66kq Brazil JOO CARLOS VIEIRA
W4GA 2015-06-04 6m SSB EM74qc United States Robert E Mantell Jr
W3CP 2015-06-04 6m SSB EM74ug United States Bryan W Dunn
AB4B 2015-06-04 6m CW EM64it United States TIM L WININGER

Book Totals: 491 qso's   202 confirmed Get a free logbook at QRZ.COM


c
World Continents Award#4776
Granted: 2015-02-18 21:10:02   (KD2AVU)

Endorsements:
  • 10 Meters Mixed
  • 10 Meters Phone
Grid Squared Award#3989
Granted: 2015-02-18 21:10:01   (KD2AVU)

Endorsements:
  • Mixed Phone
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