[Nashua Area Radio Society]

Good info Bill.  Thank you.

[Nashua Area Radio Society]

I have a pick up and can help with tranportation.

I noticed that the “Our Activities -> Field Day” page does not have the 2021 field day information. Would it be good to have the announcement there?

[Nashua Area Radio Society]

Thanks for the link. I agree, it doesn’t look great for our area.

So… does anyone know of an available local earth ground resistance meter ?

 

 

[Nashua Area Radio Society]

Thanks for the replies guys.

As I’m constructing the shack, this DC supply will have a dedicated circuit. My intention is for it to be a permanent installation. If I need portable power, I’ll invest in a separate unit.

Realistically for now, the DC supply will need to support simultaneous use of a 7300 & 9700, which adds up to a max of 39 amps.

So I figured a supply capable outputting in the range of 50-60amps will allow for enough headroom.

I’ve found an Astron RM-60-220 unit.  It looks promising.  Might help with keeping the room warm in the winter too.  😉

 

 

 

[Nashua Area Radio Society]

for some reason it didn’t put the second picture in. Here it is.

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[Nashua Area Radio Society]

At that power level, there’s a lot of incentive to get a switching power supply. I use a BK Precision 1692, rated 0 to 15 V at 40 amps continuously. It’s a lab supply. A lot of the ones sold on the ham market rely on pretty outdated linear technology. I haven’t found Astron all that reliable. Mine has blown its pass transistors twice.

valuetronics.com carries a wide variety of commercial grade lab instruments. You could take a look at what they have in the 15 V range.

Either way, you’ll probably need a dedicated circuit. That power level is close to a full load for a 120 V 15 A circuit. If you use a 240 V model, you’ll most likely need to install a circuit for it, and that will limit where you can move it to if you want to go portable or relocate.

Jack Carroll W1PK

[Nashua Area Radio Society]

Fred, you have the field day date as April on the home screen. I think you mean June?

[Nashua Area Radio Society]

Thanks to all for responses to date.

Hamilton:

Yes, Amherst, NH. You may recall that you generously assisted me about two years ago in replacing some surface mount ICs on a spectrum analyzer PC board. I think compared to your antenna farm, my project really simple. Just one wire from about 60-70 feet up a pine tree to a spot above an upstairs window on the house where the feed point will be located. I have done a fair amount of thinking about how to so this with a minimum of hassle, and, except for getting a wire over the branch in question, I think it is pretty well scoped out. I have begun collecting parts and intend to lay this all out on the ground before attempting getting something into the tree. Your offer of a traveling spud gun is attractive and I’ll check back with you once I have everything organized and return from some extended travel – probably late  May at the earliest. In the spirit of full disclosure, the optimum branch is really up there and in close proximity to other branches; would seem to take some pretty fancy shooting with the spud gun.  While a fair marksman with a .45 pistol, I have never used a spud gun, so this may be a challenge unless your aim is better than mine!

Thanks,

Rick

K8EZB

[Nashua Area Radio Society]

Hello Jay,

I’m actively working on my shack, so I can’t definitively say (yet) if my micros are producing any noise.

 

Ryan

[Nashua Area Radio Society]

Hi Jon,

Thanks for the quick response. I think I have the right mental picture of how you did this but the stainless steel cable remains a bit of a mystery. Any chance you can point me to something on the web that illustrates this approach?

 

As far as using a a slingshot or bow & arrow, this may defy physics due to the angles involved, but I’ll check it out a bit further.

 

Thanks,

Rick

K8EZB

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