2 new records on 6M

[vk3six]

withdrawn by popular demand

[VK2GOM]

With 7.5kW I should hope so

73 - Rob VK2GOM / G0MOH

[vk3six]

yawn

[VK2GOM]

Finger trouble on his QRZ.com page then. I'm sure he'll fix it

73 and Merry Christmas - Rob VK2GOM / G0MOH

[vk3six]

ho hum

[VK2GOM]

How come you took the bit about me telling lies out?

Anyway, this is going nowhere. I'm back to looking over the Chilli I'm making.

73 and a Very Merry Christmas - Rob VK2GOM / G0MOH

[VK4ABW]

Someone is having a bad day.
That SP record was broken in April 2000, well before i got my first qro permit. Done with a single 11el yagi and 100watts from an original 756. QSL cards do arrive years after the event.

Last year I asked to upgrade my old qro permit to 1,500watts average power and it was approved.

If you have a problem with what the ACMA gave me, take it up with them.

The new cw eme record was achieved with a single 13el yagi and 1,500 cw (well below my qro limits)

Someone needs to do their homework again

Yawn.

[VK3AUU]

Gary, I'm not sure how you reckon 1500 watts of CW is different to 1500 watts RMS. Please explain.

David

[VK2GOM]

David,

This document:

http://www.eznec.com/Amateur/RMS_Power.pdf

explains why RMS when applied to RF power is not average power.

Interesting reading, and I hope it helps.

73 and Merry Christmas - Rob VK2GOM / G0MOH

[VK4ABW]

see below david.

[VK4ABW]

This is an extract of the form David.
This worksheet should be completed in accordance with the preceding instructions.
Station information
1. Call sign: 2. Band:
3. Station location:
4. Evaluated by: 5. Date:
6. Description of transmitter and external amplifier (if applicable):

Evaluation
7. Average power output, in Watts: (A) W
8. Average power output, converted to dBW: (B) dBW

9. Feed line loss specification: (C) dB per 30m
10. Feed line length, in metres: (D) m
11. Calculated loss, in decibels: (E) dB

12. Other feed line components:
13. Losses due to other feed line components, in decibels: (F) dB

14. Average power fed to antenna, in dBW: (G) dBW
15. Average power fed to antenna, in Watts: (H) W

and i thought i was asking for pep maybe i shouldn't have asked for so much???
so am i correct?

[VK4FP]

Extract from ACMA "HUMAN EXPOSURE TO EMR: ASSESSMENT OF AMATEUR RADIO STATIONS FOR COMPLIANCE WITH ACA REQUIREMENTS" document.

Note that transmitter power can be specified as either peak envelope (PEP) or mean power. The
determination of human exposure levels, and consequently, minimum separation distances, is based
on the mean power. Accordingly, where only PEP is known, the power shall be multiplied by the
conversion factor (form factor) appropriate to the mode of operation. Table 1 provides form factors
for transmission modes commonly used in the amateur service.
Examples:
an SSB transmitter has a power rating of 100W PEP and the form factor from table 1 is 0.2
(no speech processing in use). The mean power is therefore 20W.
An FM transmitter provides 25W output power and form factor is 1, therefore the mean
power is 25W.
See also notes 1–3 following.
Table 1. Form Factors of modes commonly used by amateurs
Mode Form Factor Notes
Conversational SSB 0.2 Note 1
Conversational SSB (with compression) 0.5 Note 2
Voice FM 1
AM voice, 50% modulation 0.5
AM voice, 100% modulation 0.3
Digital modes (eg PSK31, AMTOR, MFSK) 1
Conversational CW 0.4
Carrier 1 Note 3
Analogue TV 0.6 Note 4

[VK4ABW]

Thanks for setting the record straight Lloyd
calculator in hand... 1,500 mean power = (non compressed)ssb 7,500 ?
fancy that

[VK5BC]

Garry

Congratulations and well done on the records. you've gone to the trouble of getting the appropriate approvals and set you station up with the appropriate equipment and large antennas to be able to achieve them.

Well done.

73's Brian
VK5BC

[VK4ABW]

you are too kind sir (Brian). yes, one must always have the appropriate approvals and not flaunt the rules
SP certificate received. pending eme one

[VK3AUU]

The calculations you have there only apply to EMR calculations of which I am very cognicent.
It doesn't apply to your high power permit. If it says 1500 watts output, that is key down CW output, regardless of what duty cycle you like to use.

David

[VK4WDM]

Congrats on finally confirming the 8P9 and claiming the record Gary. I remember the loud cheers from the north when the QSO was made. It proves that large power levels and massive antennas are not required to work real dx on 6m, an "off the shelf" transceiver and a home brew yagi will make the grade. A good opening, and most importantly, a skilled operator, are the most important ingredients for success.

73

Wayne VK4WDM

PS. Do be assured that I will be attempting to knock you off your perch during the next cycle with my 100w and seven element yagi!