Sunday, March 24, 2019

Part 4 Lets look at some condo antennas

At our old condo the loop loops like a covered piece of furniture.
Good afternoon everyone, it's time to have a look at getting on the air from a condo. I have been living in a condo for about 6 years now and really have only had one antenna BUT I have tried some that really did not work at all and some that did a so so job. Operating from a condo does have it's challenges:
- most likely you are in a highly populated area with other large condo's around you.
- very small foot print for an antenna.
- In some cases the condo unit is small which limits your space for the ham radio "stuff".

Well now that I have you listing your radio on QRZ.COM for sale lets look at some of the advantages of being in a condo.
- In most cases you are high up as for me in one condo I was 60 feet up and in this one I am 160 feet up.
- Your balcony as most are made of metal make a good ground plane for some antennas.
- Your ham skills are challenged with regards to antennas, power output and mode of operation.
OK the last two points above I was really stretching for some positives but for sure height is in most cases a major advantage.

In this post lets look at some antennas that may work from a balcony. The antenna I use as you may already know if you are a regular reader of my blog is the MFJ 1788 mag loop. Now I have had many comments as well as emails saying that the mag loop is pricey. It's very true it is and most mag loops are not cheap as I also have the Chameleaon CHA P loop 2.0 mag loop for portable op's which also is a pricey antenna. I did save my pennies and spent some coin on the MFJ 1788 and not to turn this post into a review of MFJ but quality is not noted on the Eham review site with regards to most MFJ products. I did have a small issue with my loop but I repaired it and since that time (6 years ago) the loop has given me no issues at all. In no way am I saying that the mag loops are the only way to go.
A very unique looking antenna that is great for balcony operation is the Isotron antennas  these antennas get a very decent review on Eham and I know of a ham who uses one and has had great success with it. These antennas are small, no ground plain needed and they can be purchased as mono band or multi band. Also they really don't look like an antenna. With antenna when you want to use it you put it out and when done take it in. In the present condo I am in this is how I use my MFJ loop it's only out when I am using it.
The loop at our new location 
Another antenna worth mentioning is the new Elecraft AX1 for 20/17/15m and rumors are they may be extending the band coverage soon.  It comes with a 13 foot radial wire and has a max output of 30 watts.
Depending on the size of your balcony a wire antenna dipole antenna can be used. When we were looking at condos some balcony's were huge and could support a homemade wire dipole antenna. Two antennas I have tried that did not seem to work for me is a mono whip antenna mounted vertically  with pre-cut radials...did not work at all. I also could not get the MFJ 1788 to work horizontally at my new place I had to mount it vertically. I also tried mono whip antennas in a dipole configuration and it did work but way to large for the balcony.
In my next post I am going to talk about what modes of operation I found to work best for me and how it opened a new door for me in ham radio...........oh and by the way from my condo setup as I was writing this post I was able to make contact with IK4UPB on 20m.

3 comments:

PE4BAS, Bas said...

Hello Mike, it is great you can get your signal out with the loop. It's so unfortunate the loop covers only part of the amateurbands. At one occasion I have been transmitting from a balcony on a vacation. I was using the superantenna MP-1 with good results. Unfortunately the MP-1 only covers limited bands although there is a extension coil available, In your situation I probabely built my own magnetic loop which would be slightly bigger to cover 80m and 60m as well. Thanks for the interesting posts...always like to see what people are working with especially in difficult situations. 73, Bas

VE9KK said...

Good afternoon Bas it's always great to hear from you, I have seen and read about the MP-1 it sounds like a great antenna but for me I prefer an antenna that I can tune from my radio desk. It's hard to have the rig in a bedroom and move to the balcony to return the antenna. I have considered building a loop but at the moment I work mostly all the time so building it just would not happen. I would like to get onto 60 and 80m BUT I will be retiring this year and we are planning on moving out of the condo and just maybe there will be the room for something to cover those bands.
Thanks for taking the time to comment Bas all the best!
73,
Mike
VE3WDM

Gerardo Moochie said...

Hi Mike...

In December of 2013 you wrote a blog concerning the MFJ-1788 compared to the MFJ-1780. Thank you for that.

I am in a similar situation 9 years later.

I am a fairly newish ham, expecting to be a General in November. I have very restricted antenna space in my HOA/small lot, no trees, one story attached condo. Other hams suggest I would be better off installing wires than to get a loop, but at age 76 I'm not going to be hanging off ladders hanging wires from the eves - I don't even hang Christmas lights anymore. My attic is also a no-go - too much insulation and no floor.

So, I have a 1788 (15 to 40 meters) on order at DX Engineering - not in stock until January. I have time to consider other options. In the meantime I'm also considering the 1786 (10 to 30 meters) or the 1780 "Box Fan", also 10 to 30 meters, instead of the 1788. Remote tuning and at least 100 watts are essentials. My radio is an Icom IC-7100.

I will probably gravitate more toward digital (Winlink currently used and now learning JS6call - type modes) more than phone - I'm not a big talker except on 2 meter net check-ins. Consequently up to 30 meters might be all I need - 10 through 30 might make me happy enough.

On the other hand, most others I've asked advice from said I might be happier with the 1788 because "40 meters is very popular." They say I could always get a CB 11 meter antenna and use it on 10 meters. But that that requires another antenna: either a vertical like the Solarcon A-99 which is uncomfortably tall at my location at 18', or spring for the 1780 for ~$400 plus the $710 for the 1788. Ughh!

So, would you be so kind to tell me:

1. Looks like you sold your 1788 loop. How satisfied with it were you during the time and circumstances you had it?
2. What differences/pros and cons are you aware of between the 1780 and the 1786? They are both 10 to 30 meter units. Which would you recommend and why?
3. What are your thoughts about the desirability of going to 40 meters versus stopping at 30 with these loops? As I described my use, would I miss 40 meters all that much?

Currently there is a $300 price difference between the 1780 and 1788; a $250 price difference between the 1780 and the 1786; and a $50 price difference between the 1786 and 1788.

Price is a concern. Getting both the 1788 and the 1780 would be a huge stretch for me. If the 1780 is as decent as the 1786, that might be a good option.

I do have the MFJ-993B auto-tuner, but I understand thou shalt not use an autotuner with these MFJ loops.

Your thoughts and experience, please.