Additions:
Deletions:
Additions:
RVLA = RV L Antenna
Deletions:
RV L 71 Antenna
Additions:
- Center fed "L"
- 35.5 foot horizontal element, 9.5 feet above ground
Deletions:
- 35.5 foot horizontal element, 12 feet above ground
Additions:
RV L 71 Antenna
- Easy to put up by one person
- Minimum coupling to RV systems
- Minimize RF exposure to people
- Avoid trip hazards
(I really prefer to launch an
FT98 Dipole into the trees with a
Pneumatic Antenna Launcher∞, but when that option is not available, this is a good choice).
- 35.5 foot vertical element, tip at 45 feet
- 35.5 foot horizontal element, 12 feet above ground
- 48 foot tall vertical pole near rear corner of RV, on ground but held vertical by RV (I secure this in the rear outer corner of the slideout to keep it away from the RV as much as possible
- DK9SQ Pole Extensions, 4 each (approx 12 feet additional)
80 Meter Tuner Version (redo these numbers for the longer length, these are for 32ft per side)
This antenna has a signal in just about every direction, especially on 40m. It doesn't have much gain, but it has only one depression in the pattern. It has both NVIS and DX potential, though it is not optimized for either. Matching it on 80 meters is a bit of a challenge, but it is a lot more efficient than a mobile antenna on this band (and the AH-4 has no trouble).
Deletions:
RV L 72 Antenna
(I really prefer to launch an
FT98 Dipole into the trees with a
Pneumatic Antenna Launcher∞, but when that option is not available, this is a good second choice).
- 36 foot vertical element, tip at 48 feet
- 36 foot horizontal element, 12 feet above ground
- 48 foot tall vertical pole near rear corner of RV, on ground but held vertical by RV (I secure this in the outer corner of the slideout to keep it away from the RV as much as possible
- DK9SQ Pole Extensions, 4 each (approx 15 feet additional)
- (note that the new 60 foot pole from Spiderbeam might work nicely here!)∞
80 Meter Tuner Version (redo these numbers for longer length, these are for 32ft per side)
This antenna has a signal in just about every direction, especially on 40m. It doesn't have much gain, but it has only one depression in the pattern. It has both NVIS and DX potential, though it is not optimized for either. Matching it on 80 meters is a bit of a challenge, but it is a lot more efficient than a mobile antenna on this band.
Additions:
RV L 72 Antenna
In the process of my search I looked at a lot of alternatives and decided to look at "L" Antennas. This page is about the RV L Antenna that I constructed and tested at Quartzsite 2006 and 2007.
- 36 foot vertical element, tip at 48 feet
- 36 foot horizontal element, 12 feet above ground
- RV about 30 feet long, so front pole angles out from tongue/bumper to hold horizontal wire
- 48 foot tall vertical pole near rear corner of RV, on ground but held vertical by RV (I secure this in the outer corner of the slideout to keep it away from the RV as much as possible
- DK9SQ Pole Extensions, 4 each (approx 15 feet additional)
- #20 silver plated teflon insulated wire, 40 ft each of two pieces
- bungees / ropes / fittings to attach pole to RV
80 Meter Tuner Version (redo these numbers for longer length, these are for 32ft per side)
This antenna has a signal in just about every direction, especially on 40m. It doesn't have much gain, but it has only one depression in the pattern. It has both NVIS and DX potential, though it is not optimized for either. Matching it on 80 meters is a bit of a challenge, but it is a lot more efficient than a mobile antenna on this band.
Testing
Quartzsite 2007. AH-4 / FT897 /
BetterRF adapter / 49AH AGM. Loads well on 75, 40, 20. Signal reports on 75m were good. No RFI problems from/to trailer so far. Would like to incorporate balun, perhaps 1:1 at tuner output. Build something designed for this app.
Deletions:
RV L 64 Antenna
In the process of my search I looked at a lot of alternatives and decided to look at "L" Antennas. This page is about the RV L Antenna that I constructed and tested at Quartzsite 2006.
- 32 foot vertical element, tip at 45 feet
- 32 foot horizontal element, 13 feet above ground
- RV about 30 feet long, so front pole angles out slightly from tongue/bumper to hold horizontal wire
- 45 foot tall vertical pole near rear corner of RV, on ground but held vertical by RV (or 35 foot pole from top of RV)
- DK9SQ Pole Extensions, 4 each (approx 12 feet additional)
- #20 silver plated teflon insulated wire, 36 ft each of two pieces
- bungees to attach pole to RV
80 Meter Tuner Version
This antenna has a signal in just about every direction, especially on 40m. It doesn't have much gain, but it has only one depression in the pattern. It has both NVIS and DX potential, though it is not optimized for either. Matching it on 80 meters is a bit of a challenge, but it is a lot more efficient than a mobile antenna on this band.
Additions:
80 Meter Tuner Version
80 Meter Coil Version
- Impedance = 11.7 ohms
- Coil (Q 300)
- 35.7 uH
- Total load power = 26 watts (100W source)
- Total load loss = 1.3 dB
This antenna has a signal in just about every direction, especially on 40m. It doesn't have much gain, but it has only one depression in the pattern. It has both NVIS and DX potential, though it is not optimized for either. Matching it on 80 meters is a bit of a challenge, but it is a lot more efficient than a mobile antenna on this band.
Deletions:
80 Meters
This antenna has a signal in just about every direction. It doesn't have much gain, but it has only one depression in the pattern. It has both NVIS and DX potential, though it is not optimized for either. Matching it on 80 meters is a bit of a challenge, but it is a lot more efficient than a mobile antenna on this band.
Additions:
- medium high accuracy ground 0.005, 13
Deletions:
- medium high accuracy ground 0.006, 13
Additions:
Deletions:
- 32 feet vertical element, tip at 45 feet
- 32 feet horizontal element, 13 feet above ground
- (note that the new 60 foot pole from Spiderbeam would work really nicely here!)
Additions:
This antenna has a signal in just about every direction. It doesn't have much gain, but it has only one depression in the pattern. It has both NVIS and DX potential, though it is not optimized for either. Matching it on 80 meters is a bit of a challenge, but it is a lot more efficient than a mobile antenna on this band.
Deletions:
This antenna has a signal in just about every direction. It doesn't have much gain, but it has no holes either, at least on 80. It has both NVIS and DX potential, though not optimized for either. Matching it on 80 meters is a challenge, but it is a lot more efficient than a mobile antenna on this band.
Additions:
Conclusions
This antenna has a signal in just about every direction. It doesn't have much gain, but it has no holes either, at least on 80. It has both NVIS and DX potential, though not optimized for either. Matching it on 80 meters is a challenge, but it is a lot more efficient than a mobile antenna on this band.
Additions:
Deletions:
Additions:
- RV about 30 feet long, so front pole angles out slightly from tongue/bumper to hold horizontal wire
- 45 foot tall vertical pole near rear corner of RV, on ground but held vertical by RV (or 35 foot pole from top of RV)
- (note that the new 60 foot pole from Spiderbeam would work really nicely here!)
Additions:
RV L 64 Antenna
Deletions:
RV L Antenna
Additions:
- Fits in an RV Campsite
- Fits in the RV storage lockers
- Supported by the RV
Additions:
Deletions:
Additions:
Deletions:
(I really prefer to launch an FT98 Dipole into the trees with a
Pneumatic Antenna Launcher∞, but when we cannot do that, this is a choice).
Additions:
(I really prefer to launch an FT98 Dipole into the trees with a
Pneumatic Antenna Launcher∞, but when we cannot do that, this is a choice).
Additions:
- SD20 pole to support end of horizontal section
Deletions:
Additions:
In the process of my search I looked at a lot of alternatives and decided to look at "L" Antennas. This page is about the RV L Antenna that I constructed and tested at Quartzsite 2006.
Deletions:
In the process of my search I looked at a lot of alternatives and decided to look at "L" Antennas. This page is about the RV L Antenna.
RV L Antenna
My Requirements for a good RV Antenna:
- 80-10 meter coverage
- Reasonable efficiency on 80, better on 40 and up
- NVIS and DX capabilities
- Portable
- Easy to put up
- Packs into a small space
- Easy to change frequency
In the process of my search I looked at a lot of alternatives and decided to look at "L" Antennas. This page is about the RV L Antenna.
Configuration
- 32 feet vertical element, tip at 45 feet
- 32 feet horizontal element, 13 feet above ground
- 4 feet twisted together as feedline to tuner
Components
- DK9SQ 33 foot pole
- DK9SQ Pole Extensions, 4 each (approx 12 feet additional)
- SD20 pole
- #20 silver plated teflon insulated wire, 36 ft each of two pieces
- Wide range remote tuner (eg AH-4, SG-239)
- bungees to attach pole to RV
- 5 gallon plastic bucket base
- rag or foam to stuff inside base
- gaffer's tape or 3m blue masking tape to keep sections from collapsing
- front pole mount on RV (or 3 guys and stakes for ground mount)
Calculations
- feedline 4 ft 450 ohm line (don't know how to do the twisted pair, this feedline could be used instead)
- medium high accuracy ground 0.006, 13
- 100 watts
80 Meters
- 3550 khz
- 10.6 - j 1230
- 3.8kv 3.1a
- -0.7 dbi at 25 degrees (NVIS is -2 to -9 dB)
- line loss 0.12 dB
- lowpass L tuner 1600 pf 34.8 uH, 63W, loss 4.4 dB
- total loss 4.5dB, power to antenna 36W
AlanB, WB6ZQZ
CategoryHamRadio