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AJ4TF USA flag USA

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QSL: DIRECT, LOTW, OR BUREAU

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Premium Subscriber Lookups: 9614

Licensed in October 2009. Took all three tests at one time, went from zero to extra class in one day. Radio count: Icom IC-92AD, 3X Icom ID-880H (one mobile, one in the shack, one spare), Elecraft K2, Elecraft K3S, Bao Feng UV5 HT, Icom ID-51 50th Anniversary, Softrock RXTX Ensemble II.  A couple of other projects not yet in service: RTL USB receiver stick, a couple of other Softrock kits in various stages of construction.

I put together, using a very inexpensive NEO-7 GPS receiver (designed for a quadcopter), a box that can be used for a GPS-disciplined very accurate 10 MHz frequency reference.

The ID-880 (mobile) has a small GPS receiver rigged up, so anytime I am on D-STAR on that rig, you can get my current position from:

DPRS-AJ4TF

I have been messing around with software-defined radio by ordering and building a couple of Softrock kits. Still experimenting with that occasionally.

I am a member of the High Point, NC Amateur Radio Club (http://www.w4ua.net/), the Guilford Amateur Society (http://www.w4gg.org). and the Greensboro, NC Amateur Radio Association (http://www.w4gso.org/)  I have given many technical presentations to these clubs.

I built (in Sept. 2010) an Elecraft K2 HF transceiver, with SSB option. This is a kit in the truest sense of the word... it comes as a pile of parts and you solder it together.   That experience is not for everyone, but was most enjoyable for me.  I have a 'stealth' dipole antenna made with ribbon cable installed under my eaves. It's cut for 80m so with an LDG Z11 Pro2 antenna tuner, I am on the air on HF. It's not ideal, but I am making contacts so I know it's putting out RF! The K2 is equipped with the KPA100 power amplifier. I can still work QRP, or 100W, with just a twist of a knob!

Along with the SSB option for the K2, I constructed a homebrew soundcard interface, and frequently work PSK31(PODXS 070 #1479, LONP # 296) RTTY and JT-65.  In fact I hardly ever pick up the microphone anymore (but's it's there).

https://www.youtube.com/watch?v=vJXT1Gumdk8&t=6s

My most recent addtion to the station is an Elecraft K3S.  After a few years of drooling over it, I finally took the plunge.  This is an outstanding radio, I especially like the 100% USB to computer interface with built-in sound card.  No tangle of audio cables in the back... one connection only!  This radio (serial # 10669) is also equipped with the 100 amp and the intenal antenna tuner.  Look for it on the air as both AJ4TF and W4UA (for field day!)

A better HF antenna is in the planning stages now. I built a 120-foot doublet along with a remote-mounted box for my tuner, and used it during Field Day 2011-2017 while working at field day station W4UA (High Point, NC Amateur Radio Club). It seemed to work well, I was able to make many contacts on 15m and 75m. (It also tuned up on other bands but we had other stations working those).  I've been meaning to get it put up now for about 5 years but other things always seem to get in the way...

PODXS 070 #1479,  LONP # 296

EPC # 23855

I will QSL with a card for any that I receive. 73, David AJ4TF

8183945 Last modified: 2017-06-27 09:28:33, 3782 bytes

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QRZ Logbook Summary for - AJ4TF
Latest Contacts for AJ4TF at QRZ.com
dedateband mode grid Country op
WD5BFH 2013-10-02 20m PSK31 EL98ec United States ERIC E BERGMAN
KB3YHO 2013-09-05 2m FM FM19ao United States Richard G Spong
VA2DXZ 2013-09-02 20m PSK31 FN48lk Canada Pascal Tremblay
ON7TZ 2013-09-02 20m JT65 JO21KH Belgium Dave Van Loon
XE2KJ 2013-07-21 20m PSK31 DL95mj Mexico JOSE VELAZQUEZ CARDONA
WP4MJE 2013-06-28 20m SSB FK68wj Puerto Rico Sebastian Hyden Bonnett
EA8HZ 2013-04-21 15m PSK31 IL18tk Canary Islands PABLO CRUZ CORONA
WA9ADT 2013-04-06 20m PSK31 EN52tb United States RONALD A HANSEN
KA7PNH 2013-03-30 15M SSB DN72ct United States WILLIAM W BLACKBURN
KC7UBS 2013-03-24 15m JT65 DN74gg United States DANIEL C MITCHELL
VE2KLL 2013-03-21 20m PSK31 FN46jr Canada Clermont Lebel
HC7AE 2013-03-20 15M PSK31 FI09sr Ecuador Ricardo Paul Escobar
N8XYO 2013-02-14 70cm DSTAR EN81gn United States EARL R WELLS
KC2WTG 2013-02-02 40m JT65 FM29rj United States George L Haywood
N2CAT 2013-01-30 40m JT65 DM26ic United States Austin McGovern

Book Totals: 92 qso's   80 confirmed Get a free logbook at QRZ.COM


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