WB6JBM@MPNA-DOT-COM

WB6JBM Station

E.F. Johnson Straight Key: Purchased in Feb 2000.
Mounted 5/21/2000.
Very smooth action. Cable is RJ-174.
Small Wonders Labs SW40+, QRP-L Elmer101 kit: Built in early 1998, this kit was a project coordinated on the QRP-L majordomo list.
This radio was a joy to build, and even better to operate. Fired up first time! Vital signs...
Output power - currently tuned for 4W output, capable of 5.
Freq coverage - 7.022 - 7.058.
Receiver comparable in performance to a Drake R4B.
Usable input voltage range, 11.2 - 14.2Vdc
Overall transmit efficiency is >67%!!!!!!
Enclosure: Decorative coffee can.
Stored in Bubba Box.
Added Tuner 5/520/2000, based on Minipig10 design
Ten Tec Argonaut, 505: The Original Ten Tec Argonaut! Complete with an almost un-usable setup for 10M.
Originally purchased in 1975. Currently in DIRE need of overhual.
The dial cord/pointer does not work.
Power output on 80 is 2.2W
Power output on 40 is 1W.
Power output on 20 is 0.1W.
Power output on 15 is ---Detectable signal on local receiver.
Power output on 10 is ---No detectable signal on local receiver.
Panel lights are non-functional.
RF gain and AF gain pots have rust spots on the actual variable resistor surface.
Some of the coil core's have cracked.
Spectral purity does NOT meet the FCC's requirements.
Many cabinet screws have been replaced with bigger screws.
Final power amp board has suffered major heat damage.
Final power amp transistors are CGE Replacements.
The mixer transistor located on the board under the band changing inductor mounting plate has been replaced with CGE replacement part.
Modified for using a BNC antenna connector.
Modified 9V regulator (due to failure of original)
Modified aux power connectors to support higher current drain devices.
Modified input power cableing to support reverse polarity protection.
Needs to be sent to Sevierville, along with a check for $500, and a note saying "Fix Me!".
Stored in Bubba Box.
MFJ 9020: Second Owner.
Purchased in May 97.
No Mods.
Great little rig. But really needs to have the audio filter option installed.
Very temperature sensative. When at temp extremes, TX offset goes wide.
Does not operate well with a supply voltage below 11.8V.
Stored in Bubba Box.
ICOM IC2-AT: Original owner. Purchased in 1986.
TT Pad option installed.
Works well, but could use sub-audible tone mod.
On only 2nd battery pack.
Have had to open case to re-solder the ground connection for the external speaker.
Can be stored in Bubba Box.
RF Concepts 2M 30W amp: Original owner. Purchased in 1986.
Installed in car, but can be easily removed for in-house operation.
Rx RF pre-amp is very noisy, and really not useful due to this noise.
Can be Stored in Bubba Box.
38 Special: 2nd owner. Purchased from another amateur in 1997.
Tick Keyer installed.
High Power mod installed.
Works ok, Rx sensativity is poor.
Would benefit greatly from an on-board AF amp, and speaker.
Keyer jack uses 1/4" stereo phone plug. would prefer Mini (1/8") plug.
Installation of a separate jack for keyeing would greatly enhance operation. That way, I would have to maintain one less cable.
Molex Connector has been installed for input power, consistant with ARRL reccommended DC standard cableing.
Stored in Bubba Box.
K1EL Keyer, & Bencher Paddles: Original owner. Purchased in 1997. Wife got me the paddles for my birthday.
Cables for paddles go to DB25M connector, for use with N9TR logging and keying program.
Switching transistor is mounted inside db25M.
Keyer is built in Radio Shack small blue plastic box, powered by 3 AAA batteries.
Connection is through db25F to simulate computer parallel port, so only one set of keyer cables are required.
Keyer output is 1/8" phone plug.
Stored in Bubba Box.
Labtec Computer Speakers: Used as external speakers for just about any radio I have.
Complete with 1/8" stereo to mono adaptor plug.
Stored in Bubba Box.
140W 12V DC -> 120V Modified Sine Wave Inverter: Original owner. Purchased in 1997. Wife got me this for Christmas.
Modifed input power cable to use Molex connectors IAW ARRL recommended standard.
Primarily used for powering soldering iron or notebook computer while in the field.
Can also be used to power Bug-Zapper while in the field.
Stored in Bubba Box.
67.5AH 12V Deep Cycle Battery.: Original Owner. Purchased in 1997.
Power cables installed IAW ARRL recommended standard.
Stored in Bubba Box.
30AH 12V Automotive Battery.: Original Owner. Purchased in 1997.
In service in Sable from July 97 through Jan 98.
One Power cable installed IAW ARRL recommended standard.
Stored in basement
4AH 12V Motorcycle Battery: Original Owner. Purchased in 1997.
Power cables installed IAW ARRL recommended standard.
Can be used with 12V air pump to inflate Queen Size Air Mattress twice.
20M 1/2 wave Dipole/Inverted Vee (depends on installation method): Homebrew in 1997, using High-Q balun (in PVC) and 12ga stranded copper antenna wire.
Works great!
Stored in Bubba Box.
80M 1/2 wave Dipole.: Homebrew in 1998, using center insulator made of wood, and 18ga Radio Shack solid conductor hookup wire.
Stored in Bubba Box.
40M Indoor Vertical.: Built in 1998 in conjunction with SW40+. Inside my appartment, along the stairwell.
Works great into Michigan.
Stored in place.
12V low and high current lighting.: Homebrew in 1997/98.
Low current uses automotive dome light, and is mounted on an old telescopic antenna, with socket hole in Bubba Box for mounting while in tent.
High current uses automotive tail light, and can be hung from just about anything.
Stored in Bubba Box.
Bubba Box.: This thing has to be seen to be believed!
It is a behemoth!
It is made of wood!
It is a miracle of modern technology!
Able to be lifted by two men and a small boy!
Able to squish small boy if the two men let go of the handles!
Provides place to sit.
Provides place to operate.
Provides place to cook.
Holds all items listed as "Stored in Bubba Box" at the same time.
Includes storage for Queen size air mattress, 2 tarps, tools, rope, 12V air pump, 2 sleeping bags, 2 grey blankets, 2 camp pillows, cooking and eating equipment, coffee, coffee pot, 3 days of food and drink mix, Portable TV, Portable AM/FM radio, big battery powered lantern, 8 cans of Sterno, Sterno Stove, 2 clipboards for logging, log sheets, maps, compass, cellular telephone, wisk broom, towels, 5 days of tobacco products, 100ft RG-58/AU, spare parts, soldering iron & solder, spare tent stakes, 4 chemical light sticks, toilet paper, soap, duct tape, sunscreen, bug-be-gone, and clothesline for use inside the tent to hold up the high current lighting.
You really have to see it to beleive it.
Battery capacity and component current drain.

WB6JBM Event Log

Current Station Location: 4957 Buckhorn Dr. West Chester, OH.

Event	From Where	Summary	Link
WAS QRP	Work In Progress	26 States QSL'd	Results
FYBO 01	Caesar Creek State Park, OH.	31 QSO's	Results
FYBO 98	Winton Woods State Park, OH.	46 QSO's	Results
CW SS 97	Home Station	102 QSO's	Results
1997 ARCI Fall QSO Party	Home Station	28 QSO's	Results
1997 BUBBA Sprint	Paint Creek State Park, OH	7 QSO's	Results
MI-QRP 4 July CW Sprint	RST, OH 4W, from home QTH	6 QSO's	Results
Field Day 97	1A, OH with ACARA	?? QSO's	Results
Field Day 94	1D, CT	18 QSO's	Results
SSB SS 93	Home Station	51 QSO's	Results
CW SS 93	Portable, 2 op w/KB7AVT	65 QSO's	Results