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Active Antenna Kit - Ramsey AA7C

3.9 out of 5 stars 13 customer reviews
| 4 answered questions

Currently unavailable.
We don't know when or if this item will be back in stock.
Currently unavailable. We don't know when or if this item will be back in stock.

Technical Details

  • Brand Name: Ramsey

Product Information

Product Dimensions 9 x 6 x 1.4 inches
Item Weight 8.5 ounces
Shipping Weight 8.5 ounces
Manufacturer Ramsey Electronics
ASIN B0002NRJC2
Customer Reviews
3.9 out of 5 stars 13 customer reviews

3.9 out of 5 stars
Best Sellers Rank #160 in Electronics > Car Electronics > CB Radios & Scanners > Radio Scanners
#10,383 in Sports & Outdoors > Sports & Fitness > Hunting & Fishing > Hunting > Hunting Accessories
#11,566 in Electronics > Security & Surveillance
Date first available at Amazon.com July 21, 2004

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Customer Reviews

Top Customer Reviews

By J. Moran on May 19, 2007
Verified Purchase
If you have a scanner and are trying to get ultralow bands, then this is for you. It does what is says it does, but it isn't going to change the way you do scanning.

It's a nice accessory and building it was a bit tricky but nothing god awful. Take your time and be patient.

Overall it gets a 4 because the price seems a bit much for what you get and the case that comes with it isn't a "perfect fit", some of the knobs stick out a bit more than I would like. However, it does do a nice job of getting lower bands in and also is compact which is all I needed it for.
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Once I got it built, I was not sure that it worked since it did not improve my reception. With some experimentation, I realized that it was working OK since I could see the noise level go up by about 20+db as I turned it on and turned up the gain as compared to the by-pass mode. I think the problem is that I do not have a good enough antenna (I am currently using a short end-fed random length antenna). I just got my ALA1530S loop antenna but that already has a gain antenna built-in, so I will experiment with this Antenna with an external long wire and an antenna tuner. As mentioned, it does give me the gain, but it also amplifies the background noise. Once I experiment more, I will write another review.
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Verified Purchase
Fun electronic kit to assemble, no issues with instructions or outcome. Testing shows the product performs as sold and used to amplifier antenna signals for wideband DX receiver. The biggest negative issue is the plastic case offers no isolation from nearby stray signals, not a problem with narrow band recievers with high selectivity. I wrapped the case with aluminum foil with lots of overlap and expect it might have tammed some interference!
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This project was very easy to build. I had the kit completed in under an hour and 15. The little amp works as described, but of course has the expected limitations of this type of antenna. The amp works great on all frequencies, but tends to raise the noise floor to an unacceptable level when you turn the level up too high. The power button protrudes too far from the front of the case making the project look a little cheap. Overall I would recommend this project as long as you keep your expectations in check.
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I just completely rewrote this. So I'm now giving it full five stars but with a caveat - GET A BETTER ANTENNA!! I dug around in the junkbox and found a six foot heavy telescoping antenna with PL-259 termination - sweet! So I built up a plate to attach to a standard camera tripod to elevate it a few feet. I made up an RG-58 coax soldered to an SO-239, the other end BNC to hit the AA7C. Lastly I added four 1/4 wave radials for 20-meters (my only band of interest with this) - and just doing that, 20m CW and SSB signals jumped through the roof in signal strength.

I've got this paired with a Ramsey 20m 2-chip $44 receiver that I rehoused with an added 10-turn main tuning pot, 2k bandspread and an active audio filter for CW. With the addition of the much improved antenna, I hear TONS of signals without having to crank the AA7C into overdrive which the very simple 20-meter receiver chokes on if I do. I can see why Ramsey can't "be all things to all users" - the whip they provide may well do a great job on scanner frequencies but it's all but useless on HF - so just so's you know that, and have a way to up the antenna a bit you'll do fine. For me, I'm building all this up so I can take a 20m CW/SSB SWL-only rig on a cruise next week - just for the heck of it, so I can log CW and SSB along with the GPS coordinates of where I heard them and send an SWL email QSL to all the stations I copy - just seems like a fun way to sit on our Owner's Suite balcony while the wife is playing Bingo :-)

All in all, it's now working really well!! I'll try to remember to add a photo of the setup
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built all kits from different companies.... This unit needs to be by window..... to perform,, I liked this unit

will pick up the indoor noise from other sources.
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Took me 8 hours to build it,Didn't work
That's all for now
I revised the soldering all the soldering points,some had gray colour, I fixed them,now it works but not better than the 10 meters wire antenna which came with my gegen 1103 radio,,...it is ok....I added 2 stars,but still feel that it is over priced ,may be $35-40 wold be an equitable price.
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