There was something wrong with the power connection on the back of the IC-706MKIIG. Power would sometimes cut in an out, usually when I was driving over bumpy roads. I pulled the cable off and noticed that the pins were bent out of shape. The pins in the connector (cup shaped) were spread too far out and were not making solid contact with the pins on the back of the radio. I had replacement pins, so I yanked each of the old pins from the connector (no easy doing) and soldered on the new pins, slid them into the connector, used the tip of a pair of needle nose pliers to lock them into place. I placed the the power connector back on the rig in the truck and it works great!
Tag: mobile
40M mobile
I played around with the Opek and Workman 40M antennas this morning. The Opek tuned from about 7.150 to 7.290 and the Workman tuned from 7.040 to 7.250. I noticed a difference in the receive – the Workman was doing a better job. I have an extra stinger for the Workman, so I’m going to shorten it a bit allowing me use of the upper phone band on 40M (good for lighthouse work on 7.270). I can then lengthen the existing one just a bit to allow me to cover all the CW area of 40M.
Had a nice QSO with Frank, AC9T, located up near Chicago. He served in the Navy aboard the battleship USS Iowa and told me what it was like sailing underneath the Golden Gate Bridge in San Francisco.
More on the mobile install
I spent some more time on Sunday improving my HF mobile install. After completely removing the rear interior panel of the cab and finding no grommet or any other easy method of passing the feedline into the cab I was able to find a nice sized grommet under the passenger seat. I was able to keep the feedline to a length of 10 feet, ran it through a plastic covering for protection, and then tied it off underneath the truck at multiple points using zip ties. For the antenna mount support, I found an L bracket at Home Depot that I was able to securely bolt to the bed of the truck near the cab. I ran a short length of braided grounding wire from the other side of the bolt (inside the bed frame) down to the frame of the vehicle underneath the cab. For the antenna mount, I’m using a 3/8 inch X 24 Radio Shack base fitting – standard for use with Hamstick, Hamstick knock-offs, and the Hustler varieties. The base fitting fit neatly through a pre-drilled hole through the top of the L bracket.
In the past when I operated portable HF from the truck I used one of the 12v convenience outlets (aka cigarette lighters). I have consistently failed to locate any easy access through the engine firewall for a power cable. Now with finding the grommet under the passenger’s seat, I decided to use that for the entrance for 12v power. I used 10 gauge wire from the truck’s battery terminals (both with in-line fuses), routed the cable around the engine and down the passenger side to the grommet. I terminated the line using Anderson PowerPoles and am using a Saratoga Amateur Power Panel for distribution.
I took advantage of the IC-706MKIIG’s detachable faceplate, using the mounting kit to attach it to a Belkin iPod/PDA holder that secures into a cup holder. This allows me to easily tune around the band with my right hand without any reaching. The handmike attaches to the faceplate.
I haven’t found a great place to actually secure the radio and auto tuner. Right now they’re tucked under the rear of the front passenger’s seat. The seat immediately behind the passenger’s seat folds up towards the front of the truck and provides protection (and shade) for the rig. If I can find a way to mount the radio that still allows me to quickly and easily remove it for portable use, I’ll do it.
For antennas I’m using a two Hamstick knock-offs made by a company called Workman. One is for 20M and the other is for 40M. They easily screw into the 3/8 inch X 24 base fitting. Both work well, the 20M tunes the entire band and the 40M tunes nicely below 7260. I also purchased a cross between a Hustler and a Hamstick antenna (also for 20M and 40M) made by a company called Opek at the Virginia FrostFest last month. The 20M antenna is worthless. It won’t tune anywhere in the 20M phone band. The 40M antenna does a nice job covering the 40M band and tunes up to 7290 without issue. I also have a 75M Hamstick (can’t remember where I bought it) – with a little trimming of the stinger I was able to get the stick to tune the upper portion of the 75M phone band. The tuneable bandwidth for the 75M stick will be narrow, no way around it. But I can cut a few different length stingers to provide coverage down into 80M.
I’ve had successful QSOs using the Workman 20M and 40M antennas as well as the 40M Opek antenna. This evening I had the 20M Workman antenna mounted and first had a QSO with PS7JS in Brazil. There were several stations calling, but PS7JS came back to me after my second call and gave me a 59 report. Ten minutes later I had a QSO with Pedro, XE1REM, operating from Mexico City. Pedro also gave me a FB 59 report. Earlier today I had a QSO with a station in Slovakia, receiving a 57.
A couple of notes on operating mobile:
(1) I need to get something to take notes with. I need to be able to jot down callsigns, freqs, and times.
(2) I have to remember to include “mobile” after my callsign.
Mobile install
Tonight I hooked up my IC-706MKIIG in my truck. Very temporary setup – I just wanted to see if everything would work. I mounted the antenna using an L bracket on the inside of the bed of the truck near the cab. I’m using single band antennas and used one cut for 40M for tonights test.
FrostFest
I went up to the Richmond, VA hamfest (aka FrostFest) on Sunday. They had an ARRL card checker and I was able to get my QSL cards verified for the Worked All States (WAS) award. I spent the early part of Sunday organizing my cards (my QSL card organization needs some work). Most states I have multiple contacts for except for Alaska, Wyoming, and Delaware. The drive up to Richmond took about an hour and the parking lot was packed. Tons of cars and trucks with amateur radio license plates, most bristling with antennae. Arriving at 9:30am (the door had opened at 8:30am) I found no line and was able to walk right in. The hall was packed. I found the ARRL card checkers right away and dropped my cards off. Wondering around, I saw mostly junk… but some good stuff. I ended up purchasing a mobile antenna for 40M and 20M as well as a bumper mount. Ending up back at the card checker I was told that my cards were good to go and I can expect to get my WAS certificate in about a month.
Station Books
I want to finish up my station books tonight. I got the idea from an eHam article, but the idea behind a station book is just a consolidation of all the equipments manuals as well as a station layout diagram (to include wiring diagrams).
I’m creating a book for the main shack, the ARSIB, my Tundra mobile, and the Avalon mobile.
2M Mobile Install
I installed a 2M rig in the Toyota Avalon today. I got a Radio Shack HTX-242 off of eBay. For the mount I used a Diamond K601M UHF hideaway trunk mount and a Diamond dual-band antenna. From the tests so far, the rig works pretty well. For an older radio, the HTX-242 has all the features of the rigs that are out there today.
Road Trip Wrap Up: APRS – from California to Virginia
Here’s a snapshot of my APRS track across the US – the track is shown in blue – the gaps indicate areas where my radio dedicated to emitting failed to make contact with another radio acting as an APRS relay.
My APRS setup consisted of the following equipment:
ICOM’s IC-T81A
This is a quad band radio (6m, 2m, 440 MHz, and 1.2 GHz), discontinued a due to the absolute hate folks had for that round “Multi” switch located to the bottom left of the LCD window. Admittedly, the radio takes a little to get used to, but overall, I’ve been very satisfied with it’s performance. The primary handicap of using this radio for APRS operation is that like most HTs, at high power it only transmits 5 Watts. I powered the radio with the optional CP-12L cigarette lighter cable with noise filter OPC-245L DC power cable.
IC-T81A manual
Byonic’s TinyTrak3
The heart of the whole operation. It connects with both the GPS and radio. TinyTrak3 takes the position data from the GPS, formats the data for use with APRS, and then passes the data to the radio for transmission. My TinyTrak3 worked flawlessly on the entire trip. It’s powered by a fused cigarette lighter plug connected with a fabricated cable that provides a serial connection to TinyTrak3 and TX/RX to the radio.
Download the configuration software and documentation.
And the final piece of my APRS triad is the GPS:
Garmin’s eTrex Vista
I purchased this GPS in 2001 when I was in Korea after I monitored a fellow lieutenant get humiliated when he got lost near the DMZ while trying to deliver hot chow to some of our soldiers. I vowed never to be “that lieutenant” and have not been lost since (as long as I had my GPS with me). The GPS got me through Korea and my subsequent assignment to Germany, but it really performed in Kuwait and Iraq. With only 2x AA batteries, the eTrex Vista usually operates for 12-14 hours.
Owner’s Manual (Software Version 3.00 and above) Rev. B, Aug, 2004
So with all the above items, I was able to traverse the continent allowing friends and family to “keep an eye” on me.