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| Reviews Summary for DX Engineering Hot Rodz™ Capacity Hat Kits |
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Reviews: 3
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Average rating: 5.0/5
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MSRP: $37.50+
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Description: Get ready for better signals and better signal reports! DX Engineering offers the extremely effective Hot Rodz(tm) adjustable capacity hat system for greatly increased efficiency on mobile or base vertical antennas and screwdriver antennas. Your antenna system can gain these benefits:
- Antenna is shorter for given band
- Wider bandwidth
- Use a single coil on multiple bands
- Attaches easily
- Aerodynamic
- Adjusts to exact frequency
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More info: http://www.dxengineering.com/Sections.asp?ID=8&DeptID=21#Top
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write your own review of the DX Engineering Hot Rodz™ Capacity Hat Kits.
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W3BNY
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Rating: 5/5
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May 31, 2006 10:12
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Great product!
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Time owned: more than 12 months
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Ive used these guys on the verticals on my truck and now shifted it to the verticl I use at the QTH. Its expandible, solid, well built and it works!
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KG4RUL
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Rating: 5/5
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Apr 14, 2006 15:57
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Great
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Time owned: more than 12 months
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I use the Hot Rodz with a Little Tarheel II, attached to a Comet trunk lip mount, on my the rear hatch lid of my Saturn VUE (only when stationary). Adding the 'Rodz' allows the antenna to resonate at 86 Meters (MARS frequencies) with approx 80 less turns of the loading coil exposed.
Dennis KG4RUL
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KM1C
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Rating: 5/5
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Apr 6, 2006 17:25
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Outstanding Product
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Time owned: 0 to 3 months
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----- Original Message -----
From: WM PEDERSEN
To: dxengineering@dxengineering.com
Sent: Saturday, February 11, 2006 11:58 AM
Subject: Hot Rodz and MM-1 w/ Tarheel 200
Hi All -
Great service, great product.
Received your Hot Rodz kit for screwdriver mobile antenna along with the MM-1 un-un transformer.
The following REALLY WORKS WELL:
1. 3 12" rodz for the capacity hat. Rods are NOT centered, rather, installed sticking out from the hub about 11", with only enough nub on the opposite side (right next to hub) to allow for a plastic end cap.
2. The MM-1 is installed at the base of the antenna just under the feed point. I'm using the 25 ohm Z port, NOT the 12.5 ohm port.
3. I cut about 28" inches off of the Tarheel stinger and installed it on top of the Hot Rodz capacity hat, using a Hustler spring at the bottom of the stinger, i.e., spring is ABOVE the capacity hat. This will allow for "bridge taps" with the stinger, while NOT requiring monofiliment guy wires, which would be necessary if the spring were installed at the bottom of the Hod Rodz 22" rod. Whole assembly (Hot Rodz rod, capacity hat, spring, and stinger) is 5' 10" long and, obvously, is installed on top of the Tarheel 200. Make sure you use stainless steel 3/8" split lock washers at each assembly connection point on the entire antenna system.
4. Above is installed on the forward side of a Thule hitch-mount bike rack on the back end of a Chevy Tahoe. When bike rack is tilted back, the whole antennas system tilts with it, making adjustments super easy. Plus, the entire bike rack / antenna assembly can easily be yanked off the truck when necessary.
5. Bottom Line: I can get straight-thru (no antenna tuner) 1:1 SWR on 3556.5 MHz (County Hunters CW frequency) with 316 turns indicated on the Tarheel Screwdriver antenna controller. I get straight-thru 1:1 SWR on all operating frequencies between 80 Meter CW and 17 Meter SSB. (Have not taken the time yet to check on 15, 12, and 10 Meters.)
I suspect I might be able to lower the turns count on 80 Meters by installing more and longer rodz on the capacity hat. I might experiment with this, but for the moment, I have a system that works without the need to install monofiliment guys wires to the roof of the Tahoe, which might become necessary if I add too much aerodynamic drag with more/longer rodz.
Thank you for your great products and fast service. Prior to installing the capacity hat and un-un transformer, I was not able to load up on 75 or 80 meters.
73 de Bill KM1C
Lexington, MA
Oriental, NC
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