	Casual Amateur Radio Since 1992
[Main] [QTH] [QSL-info] [Equipment] [Links] [Files] [How's The Ham?] [e-mail]	Under construction Once upon a time there was an ugly hamshack... Tranceiver: IC-706MK2G 160m/HF/6m/2m/70cm allmode HT: Kenwood TH-F7 "allmode"-scanner with 2m/70cm dual bander. Antenna 1: 40-6m all band vertical Hy-Gain AV-640 in storage. Antenna 2: 2m/70cm Homebrew "quick and dirty" dual-dipole not in use. If you have four spare telescope radio antennas you can attach them on a cardboard side by side to form two half wave center fed dipoles. Just solder your coax to both of them and adjust lenght according to your swr-meter. Effective? Not sure but gets you to local repeaters. SWR ok? Easily. Tuner/power meter: MFJ-948 Deluxe Versa Tuner II (older model, white face), +some V/UHF cross needle meter. PC to Radio interface: Homebrew combined PSK31-interface + CI-V control Box. Ideas used from N4TXI-CI-V-design and KK7UQ-PSK/FSK-interface. When audio interface is connected to ACC-connector mod-input of Icom you can expect low mic-gain on voice modes like SSB. Must be disconected or used a resistor network giving over 10kohm impedance to the input. <---Gave me plenty of gray hair. Someone told me that the Data jack should work seperate of the mic-connector. Power supply: Diamond 30A GSV3000 Ham-PC: Anything with DXLAB-software. The antenna mast I had in Helsinki Non penetrating roof mast in test phase. On the left the mast is in operationg position. On the right it is in antenna tuning positition. The tilt-set (originally for cellular bts-antenna) is for antenna lifting/lowering only. The construction is homebrew with some surplus parts. Click images to see them larger. Finally abt 150kg of metal and concrete on the roof: 4x drillingpipe 3m/10kg each, 4x concrete weights 25kg each, galvanised steel mast stand, 2m aluminium pipe, and the antenna itself. Click images to see them larger. How to modify your fiberglass CB antenna for 10m band The antenna I modded (the picture below) is a helicoil vertical. The coil is wound around a fiberglass rod and there's a tuning point on top. Manufacturer is Procom and the antenna is originally made to 27MHz. The electrical length according to the manufacturer is 5/8 and the height of this fiberglass wonder is about 1.5...1,6 meters. I had to saw some centimeters off from the top to get it to tune on 28 MHz and now it really works fine for a mobile whip. Well, it always did, even in 27MHz before the cutoff. Remember to seal the tip to prevent water getting in. VFO mod HR2510 tested and recommended President Lincoln (HR2510) for 10 meter band and it outputs around 20W SSB and 10W AM/FM/CW. I made a nice little VFO-mod#2 to use mic-channel buttons as a VFO instead of using them as a channel stepping 10k or similar. Ugly VFO-mod on the far left but it works. Other... "QSO Corner" at Joni's OH2HGK, Summerhouse. [Back to Main]

Casual Amateur Radio Since 1992

[Main]
[QTH]
[QSL-info]
[Equipment]
[Links]
[Files]
[How's The Ham?]
[e-mail]

Under construction

Once upon a time there was an ugly hamshack...

Tranceiver: IC-706MK2G 160m/HF/6m/2m/70cm allmode

HT: Kenwood TH-F7 "allmode"-scanner with 2m/70cm dual bander.

Antenna 1: 40-6m all band vertical Hy-Gain AV-640 in storage.
Antenna 2: 2m/70cm Homebrew "quick and dirty" dual-dipole not in use. If you have four spare telescope radio antennas you can attach them on a cardboard side by side to form two half wave center fed dipoles. Just solder your coax to both of them and adjust lenght according to your swr-meter. Effective? Not sure but gets you to local repeaters. SWR ok? Easily.

Tuner/power meter: MFJ-948 Deluxe Versa Tuner II (older model, white face), +some V/UHF cross needle meter.

PC to Radio interface: Homebrew combined PSK31-interface + CI-V control Box. Ideas used from N4TXI-CI-V-design and KK7UQ-PSK/FSK-interface. When audio interface is connected to ACC-connector mod-input of Icom you can expect low mic-gain on voice modes like SSB. Must be disconected or used a resistor network giving over 10kohm impedance to the input. <---Gave me plenty of gray hair. Someone told me that the Data jack should work seperate of the mic-connector.

Power supply: Diamond 30A GSV3000

Ham-PC: Anything with DXLAB-software.

The antenna mast I had in Helsinki

Non penetrating roof mast in test phase. On the left the mast is in operationg position. On the right it is in antenna tuning positition. The tilt-set (originally for cellular bts-antenna) is for antenna lifting/lowering only. The construction is homebrew with some surplus parts. Click images to see them larger.

Finally abt 150kg of metal and concrete on the roof: 4x drillingpipe 3m/10kg each, 4x concrete weights 25kg each, galvanised steel mast stand, 2m aluminium pipe, and the antenna itself. Click images to see them larger.

How to modify your fiberglass CB antenna for 10m band

The antenna I modded (the picture below) is a helicoil vertical. The coil is wound around a fiberglass rod and there's a tuning point on top. Manufacturer is Procom and the antenna is originally made to 27MHz. The electrical length according to the manufacturer is 5/8 and the height of this fiberglass wonder is about 1.5...1,6 meters. I had to saw some centimeters off from the top to get it to tune on 28 MHz and now it really works fine for a mobile whip. Well, it always did, even in 27MHz before the cutoff. Remember to seal the tip to prevent water getting in.

VFO mod HR2510 tested and recommended

President Lincoln (HR2510) for 10 meter band and it outputs around 20W SSB and 10W AM/FM/CW. I made a nice little VFO-mod#2 to use mic-channel buttons as a VFO instead of using them as a channel stepping 10k or similar.

Ugly VFO-mod on the far left but it works.

Other...

"QSO Corner" at Joni's OH2HGK, Summerhouse.

[Back to Main]