All Questions

0
votes
2answers
41 views

Studying for the Tecnician Test

Hi, I wish to study for the tech. license & heard there is a new wrinkle to the testing as of July 2010. What will I need to study to be up to speed for this new change(s) …
1
vote
4answers
265 views

Surge protection for a dipole antenna

I am installing a dipole antenna and and plan to attach the coax feedline coming from the antenna to a polyphase lighting arrestor that is mounted to a bulkhead in a watertight box …
1
vote
4answers
72 views

Antenna Grounding Buss

I understand that copper is the best material to use for a grounding bus, but can aluminum or other metal work as a substitute? I am trying to ground my antennas at the exterior o …
1
vote
3answers
102 views

Is YF a commonly used abbreviation?

According to this chart (and I've seen it other places), YF is an abbreviation for wife in ham radio. I've heard XYL being used quite a bit, but never YF. Is YF really used to ab …
1
vote
2answers
103 views

What does a ham radio emergency response kit have in it?

I'm not a member of an ares group or any other emergency communications group at the moment, but I am thinking that it would be a good idea to add ham radio to my family's 72-hr ki …
1
vote
2answers
280 views

What are the advantages of Software Defined Radio?

I've been reading a lot lately about software defined radio. What are the advantages and disadvantages of using SDR over a traditional transceiver?
1
vote
1answer
387 views

Inverted “V” apex angle?

Inverted “V” My understanding is that the best or common angle is 90 degrees. The ARRL antenna book says 90 but nothing else. I found a web sight by K7MEM and in this web sight say …
1
vote
1answer
45 views

Antennas in the attic

I have a strict Home Owners association, and have to mount my antennas in the attic. I currently have home made UHF/VHF antenna mounted in there and have no problems. I also have …
1
vote
1answer
53 views

Where can I get a replacement microphone?

I have a Alinco DR-600 radio. When I transmit there is an intermittent hum on my signal that I am pretty sure is caused by a bad microphone or microphone cable. The microphone is …
1
vote
2answers
26 views

Special call sign designator list / descriptions

call sign designator list / descriptions Where do I find a descritions of designators that follow call signs. In example W1AW/8 (mobile), W1AW/5 etc. etc. ? Thanks
2
votes
2answers
76 views

starting out in CW. Need straight key recommendation for a beginner.

I'm working on saving up for an HF rig (probably will buy new). One of the things I'm looking forward to is getting into CW. I'd like to know what kind of accessories I could bui …
1
vote
4answers
160 views

Splicing COAX Cable

Can coax cable be spliced? If so, what is the correct method? Will splicing coax result in a db loss or change impedence?
1
vote
3answers
380 views

Ferrite Bead Baluns

Has anyone had experience building/using ferrite bead baluns? How do you determine the number and type of beads to use? Any pointers and designs would be appreciated. Thanks, Ni …
1
vote
6answers
582 views

Balanced vs unbalanced feed lines

What makes a feed line balanced or unbalanced?
1
vote
1answer
37 views

750Watts Vs 1400 watts-what is the DB difference in signal /s units??

I would calculate it at about 1.7 db or 1 s unit more on the meter? What say All?

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