[Hammarlund] SP600-VLF-31

[Kenneth G. Gordon]

On 5 Jul 2007 at 12:11, jeremy-ca wrote:

> Thanks for all the replies, I'll have to add Dero to the search.
> Im not looking for a Pebble Beach classic, just something to actually
> use for some planned MF-VLF work and as a backup to my HRO-500/LF-10
> which I'd like to leave up in Maine.
> 
> I used the RAK, RBA and SRR-11 in the Navy but those have serious
> limitations for what I want to do.

I still have at least a couple of each of those. I like them all. They have 
different characteristics and differing uses. You might also add the RBL 
to your list of good VLF receivers. I have several of those in varying 
conditions.

> 
> An easier solution may be to just build a converter for my R-390A but
> since Ive never owned a SP-600 it sounded intriguing.

Or find one of the 1000 or so R-389s. I had three of those, now have 
one. An excellent VLF receiver on the lines of the R-390. Not for sale, 
BTW. It has motor-driven main tuning and automatic switching of filters.

I found DERO to be an excellent VLF receiver. They also tune down to 
10 Khz, which most don't.

Another excellent VLF receiver you might be interested in is the 
AN/URM-6 by Stoddart. These are often described as Noise Meters, 
but are, in fact, excellent VLF receivers. There was a whole series of 
those covering from ELF through UHF.

I have several of those with most of their accessories available.

Ken W7EKB