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Latest Posts

Topic Author Posted On
HW101 Xmit set-up KD0ZGW 4 days, 21 hours ago
I own an HW-101. I have it here in my office.

1. in receive mode (SSB), adjust the Driver/Preselector for maximum hiss in the speaker.
2 Place Meter switch to "REL PWR"
3. Set the "Load" (lever) control at minimum (three o'clock)
4. Place 'mode" knob to "Tune"
5. Rotate plate knob for maximum relative power.
6. Advance Load control and adjust plate knob to increase power output.
7. While still in the Tune position, readjust the driver control for peak relative power output. Touch up load and plate controls again.
8. Move Mode knob to the appropriate SSB mode.
9. On the meter switch, switch to "ALC"
10. Adjust the microphone gain so the meter moves off the pin rest a little bit on voice peaks.

Note: Do steps 4-7 quickly. Do not tune continuously for more than 10 to 15 seconds. If the maximum power is not reached, switch off the Tune Position for 30 seconds, then resume tuning. Once you're familiar with it, tuning up goes quickly.

Note: Make sure you use a dummy load when tuning up. This not only eliminates interference to others, but it gives your transmitter a 50 Ohm load. Once tuned, you can then switch to an antenna tuner and tune that. If you try to tune up into an un-tuned antenna, you will be tuning the rig, the antenna, the'll be chasing tuning forever. Use a dummy load first.

It is best to run your 40 to 50 year old rig below the maximum power it can put out. I run mine at 80 Watts on 80, 40 and 20 meters. On 10 meters, the output is typically around 50 to 60 Watts.

Bob Allison, WB1GCM
ARRL Senior Test Engineer
HW-16 Spurious Emissions on 15 WB5EMX 2 weeks, 3 days ago
The HW-16 has 90 Watts power INPUT. The RF output is around 40 to 50 Watts on 80 and 40 meters; about 30 0n 15 meters. If you are used to QRP, which is 5 W maximum, with 50 Watts, you will have a 10 dB increase of signal strength at the other end. That's a little under 2 S units.
? part of exchange for ARRL Inter. DX Contest, SSB N4AAB 3 weeks, 4 days ago
The report is the signal report and state for US hams.
Ex. 59 CT

Bob Allison
LotW call sign change ? N4AAB on 26/2/15
You need to create a new certificate for your new callsign.

If you run into trouble, please write to

Bob Allison
ARRL Laboratory

Forum K5ATG on 6/2/15
Thanks for supporting the ARRL. Welcome!

The forums are for technical, education and operating questions. The forums are not for, "What is your favorite radio" type of question, or for ranting.

The Lab ARRL Lab monitors the forums, along with other technical experts who wish to lend a hand. Operating and education questions are forwarded to the appropriate internal staff.

Bob Allison
ARRL Labotatory

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