Help needed to setup a RFM69 & ESP8266 Gateaway on Adafruit Feather Huzzah
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Thank you for offering help!
Here is the output of my node "AT Startup" with MY_DEBUG_VERBOSE_RFM69
__ __ ____ | \/ |_ _/ ___| ___ _ __ ___ ___ _ __ ___ | |\/| | | | \___ \ / _ \ `_ \/ __|/ _ \| `__/ __| | | | | |_| |___| | __/ | | \__ \ _ | | \__ \ |_| |_|\__, |____/ \___|_| |_|___/\___/|_| |___/ |___/ 2.3.2 16 MCO:BGN:INIT NODE,CP=RPNNA---,FQ=8,REL=255,VER=2.3.2 28 TSM:INIT 28 TSF:WUR:MS=0 30 RFM69:INIT 32 RFM69:INIT:PIN,CS=10,IQP=2,IQN=0 36 RFM69:PTX:LEVEL=5 dBm 38 TSM:INIT:TSP OK 40 TSF:SID:OK,ID=1 43 TSM:FPAR 45 RFM69:SWR:SEND,TO=255,SEQ=0,RETRY=0 51 RFM69:CSMA:RSSI=-108 55 ?TSF:MSG:SEND,1-1-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK: 2064 !TSM:FPAR:NO REPLY 2066 TSM:FPAR 2068 RFM69:SWR:SEND,TO=255,SEQ=1,RETRY=0 2072 RFM69:CSMA:RSSI=-109 2078 ?TSF:MSG:SEND,1-1-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK: 2838 RFM69:SAC:SEND ACK,TO=0,RSSI=-30 2842 RFM69:CSMA:RSSI=-111 2848 TSF:MSG:READ,0-0-1,s=255,c=3,t=8,pt=1,l=1,sg=0:0 2854 TSF:MSG:FPAR OK,ID=0,D=1 4087 TSM:FPAR:OK 4087 TSM:ID 4089 TSM:ID:OK 4091 TSM:UPL 4093 RFM69:SWR:SEND,TO=0,SEQ=3,RETRY=0 4098 RFM69:CSMA:RSSI=-108 4304 !RFM69:SWR:NACK 4306 RFM69:SWR:SEND,TO=0,SEQ=4,RETRY=1 4311 RFM69:CSMA:RSSI=-107 4517 !RFM69:SWR:NACK 4519 RFM69:SWR:SEND,TO=0,SEQ=4,RETRY=2 4524 RFM69:CSMA:RSSI=-108 4730 !RFM69:SWR:NACK 4732 RFM69:SWR:SEND,TO=0,SEQ=4,RETRY=3 4737 RFM69:CSMA:RSSI=-107 4923 RFM69:SWR:ACK,FROM=0,SEQ=4,RSSI=-74 4927 RFM69:ATC:ADJ TXL,cR=-74,tR=-78..-82,TXL=5 4931 RFM69:PTX:LEVEL=4 dBm 4935 TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1 5156 RFM69:SAC:SEND ACK,TO=0,RSSI=-29 5160 RFM69:CSMA:RSSI=-108 5167 TSF:MSG:READ,0-0-1,s=255,c=3,t=25,pt=1,l=1,sg=0:1 5173 TSF:MSG:PONG RECV,HP=1 5175 TSM:UPL:OK 5177 TSM:READY:ID=1,PAR=0,DIS=1 5181 RFM69:SWR:SEND,TO=0,SEQ=5,RETRY=0 5185 RFM69:CSMA:RSSI=-109 5392 !RFM69:SWR:NACK 5394 RFM69:SWR:SEND,TO=0,SEQ=6,RETRY=1 5398 RFM69:CSMA:RSSI=-106 5605 !RFM69:SWR:NACK 5607 RFM69:SWR:SEND,TO=0,SEQ=6,RETRY=2 5611 RFM69:CSMA:RSSI=-107 5818 !RFM69:SWR:NACK 5820 RFM69:SWR:SEND,TO=0,SEQ=6,RETRY=3 5824 RFM69:CSMA:RSSI=-111 6031 !RFM69:SWR:NACK 6033 RFM69:SWR:SEND,TO=0,SEQ=6,RETRY=4 6037 RFM69:CSMA:RSSI=-109 6244 !RFM69:SWR:NACK 6246 !TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=NACK:0100 7464 RFM69:SAC:SEND ACK,TO=0,RSSI=-29 7471 RFM69:CSMA:RSSI=-107 7475 TSF:MSG:READ,0-0-1,s=255,c=3,t=15,pt=6,l=2,sg=0:0100 7481 RFM69:SWR:SEND,TO=0,SEQ=7,RETRY=0 7487 RFM69:CSMA:RSSI=-108 7694 !RFM69:SWR:NACK 7696 RFM69:SWR:SEND,TO=0,SEQ=8,RETRY=1 7700 RFM69:CSMA:RSSI=-105 7907 !RFM69:SWR:NACK 7909 RFM69:SWR:SEND,TO=0,SEQ=8,RETRY=2 7913 RFM69:CSMA:RSSI=-107 8120 !RFM69:SWR:NACK 8122 RFM69:SWR:SEND,TO=0,SEQ=8,RETRY=3 8126 RFM69:CSMA:RSSI=-108 8333 !RFM69:SWR:NACK 8335 RFM69:SWR:SEND,TO=0,SEQ=8,RETRY=4 8339 RFM69:CSMA:RSSI=-106 8546 !RFM69:SWR:NACK 8548 !TSF:MSG:SEND,1-1-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=1,st=NACK:2.3.2 8556 RFM69:SWR:SEND,TO=0,SEQ=8,RETRY=0 8560 RFM69:CSMA:RSSI=-106 8767 !RFM69:SWR:NACK 8769 RFM69:SWR:SEND,TO=0,SEQ=9,RETRY=1 8773 RFM69:CSMA:RSSI=-108 8980 !RFM69:SWR:NACK 8982 RFM69:SWR:SEND,TO=0,SEQ=9,RETRY=2 8986 RFM69:CSMA:RSSI=-108 9193 !RFM69:SWR:NACK 9195 RFM69:SWR:SEND,TO=0,SEQ=9,RETRY=3 9199 RFM69:CSMA:RSSI=-107 9406 !RFM69:SWR:NACK 9408 RFM69:SWR:SEND,TO=0,SEQ=9,RETRY=4 9412 RFM69:CSMA:RSSI=-106 9619 !RFM69:SWR:NACK 9621 !TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=2,st=NACK:0 Presentation 11628 RFM69:SWR:SEND,TO=0,SEQ=9,RETRY=0 11634 RFM69:CSMA:RSSI=-110 11841 !RFM69:SWR:NACK 11843 RFM69:SWR:SEND,TO=0,SEQ=10,RETRY=1 11847 RFM69:CSMA:RSSI=-108 12056 !RFM69:SWR:NACK 12058 RFM69:SWR:SEND,TO=0,SEQ=10,RETRY=2 12062 RFM69:CSMA:RSSI=-108 12271 !RFM69:SWR:NACK 12273 RFM69:SWR:SEND,TO=0,SEQ=10,RETRY=3 12277 RFM69:CSMA:RSSI=-110 12486 !RFM69:SWR:NACK 12488 RFM69:SWR:SEND,TO=0,SEQ=10,RETRY=4 12492 RFM69:CSMA:RSSI=-106 12701 !RFM69:SWR:NACK 12703 !TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=11,pt=0,l=13,sg=0,ft=3,st=NACK:RFM69 Sensor 12711 RFM69:SWR:SEND,TO=0,SEQ=10,RETRY=0 12718 RFM69:CSMA:RSSI=-108 12924 !RFM69:SWR:NACK 12926 RFM69:SWR:SEND,TO=0,SEQ=11,RETRY=1 12931 RFM69:CSMA:RSSI=-106 13139 !RFM69:SWR:NACK 13142 RFM69:SWR:SEND,TO=0,SEQ=11,RETRY=2 13146 RFM69:CSMA:RSSI=-107 13355 !RFM69:SWR:NACK 13357 RFM69:SWR:SEND,TO=0,SEQ=11,RETRY=3 13361 RFM69:CSMA:RSSI=-106 13570 !RFM69:SWR:NACK 13572 RFM69:SWR:SEND,TO=0,SEQ=11,RETRY=4 13576 RFM69:CSMA:RSSI=-109 13785 !RFM69:SWR:NACK 13787 !TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=4,st=NACK:1.0 13795 RFM69:SWR:SEND,TO=0,SEQ=11,RETRY=0 13799 RFM69:CSMA:RSSI=-111 14006 !RFM69:SWR:NACK 14008 RFM69:SWR:SEND,TO=0,SEQ=12,RETRY=1 14012 RFM69:CSMA:RSSI=-105 14219 !RFM69:SWR:NACK 14221 RFM69:SWR:SEND,TO=0,SEQ=12,RETRY=2 14225 RFM69:CSMA:RSSI=-106 14432 !RFM69:SWR:NACK 14434 RFM69:SWR:SEND,TO=0,SEQ=12,RETRY=3 14438 RFM69:CSMA:RSSI=-107 14645 !RFM69:SWR:NACK 14647 RFM69:SWR:SEND,TO=0,SEQ=12,RETRY=4 14651 RFM69:CSMA:RSSI=-107 14858 !RFM69:SWR:NACK 14860 !TSF:MSG:SEND,1-1-0-0,s=0,c=0,t=23,pt=0,l=0,sg=0,ft=5,st=NACK: 14866 RFM69:SWR:SEND,TO=0,SEQ=12,RETRY=0 14872 RFM69:CSMA:RSSI=-109 15079 !RFM69:SWR:NACK 15081 RFM69:SWR:SEND,TO=0,SEQ=13,RETRY=1 15085 RFM69:CSMA:RSSI=-105 15292 !RFM69:SWR:NACK 15294 RFM69:SWR:SEND,TO=0,SEQ=13,RETRY=2 15298 RFM69:CSMA:RSSI=-107 15505 !RFM69:SWR:NACK 15507 RFM69:SWR:SEND,TO=0,SEQ=13,RETRY=3 15511 RFM69:CSMA:RSSI=-106 15718 !RFM69:SWR:NACK 15720 RFM69:SWR:SEND,TO=0,SEQ=13,RETRY=4 15724 RFM69:CSMA:RSSI=-109 15931 !RFM69:SWR:NACK 15933 !TSF:MSG:SEND,1-1-0-0,s=1,c=0,t=0,pt=0,l=0,sg=0,ft=6,st=NACK: 15939 MCO:REG:REQ 15941 RFM69:SWR:SEND,TO=0,SEQ=13,RETRY=0 15947 RFM69:CSMA:RSSI=-105 16154 !RFM69:SWR:NACK 16156 RFM69:SWR:SEND,TO=0,SEQ=14,RETRY=1 16160 RFM69:CSMA:RSSI=-109 16367 !RFM69:SWR:NACK 16369 RFM69:SWR:SEND,TO=0,SEQ=14,RETRY=2 16373 RFM69:CSMA:RSSI=-108 16580 !RFM69:SWR:NACK 16582 RFM69:SWR:SEND,TO=0,SEQ=14,RETRY=3 16586 RFM69:CSMA:RSSI=-107 16793 !RFM69:SWR:NACK 16795 RFM69:SWR:SEND,TO=0,SEQ=14,RETRY=4 16799 RFM69:CSMA:RSSI=-105 17006 !RFM69:SWR:NACK 17008 !TSF:MSG:SEND,1-1-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=7,st=NACK:2 17016 !TSM:READY:UPL FAIL,SNPAnd while executing loop() every 2 seconds:
Loop 478496 RFM69:SWR:SEND,TO=0,SEQ=80,RETRY=0 478502 RFM69:CSMA:RSSI=-107 478707 !RFM69:SWR:NACK 478709 RFM69:SWR:SEND,TO=0,SEQ=81,RETRY=1 478715 RFM69:CSMA:RSSI=-108 478922 !RFM69:SWR:NACK 478924 RFM69:SWR:SEND,TO=0,SEQ=81,RETRY=2 478930 RFM69:CSMA:RSSI=-108 479137 !RFM69:SWR:NACK 479139 RFM69:SWR:SEND,TO=0,SEQ=81,RETRY=3 479145 RFM69:CSMA:RSSI=-105 479352 !RFM69:SWR:NACK 479354 RFM69:SWR:SEND,TO=0,SEQ=81,RETRY=4 479361 RFM69:CSMA:RSSI=-104 479526 RFM69:SWR:ACK,FROM=0,SEQ=81,RSSI=-90 479533 RFM69:ATC:ADJ TXL,cR=-90,tR=-78..-82,TXL=11 479537 RFM69:PTX:LEVEL=12 dBm 479541 TSF:MSG:SEND,1-1-0-0,s=1,c=1,t=16,pt=2,l=2,sg=0,ft=1,st=OK:1 Loop 481548 RFM69:SWR:SEND,TO=0,SEQ=81,RETRY=0 481554 RFM69:CSMA:RSSI=-109 481761 !RFM69:SWR:NACK 481763 RFM69:SWR:SEND,TO=0,SEQ=82,RETRY=1 481769 RFM69:CSMA:RSSI=-109 481976 !RFM69:SWR:NACK 481978 RFM69:SWR:SEND,TO=0,SEQ=82,RETRY=2 481984 RFM69:CSMA:RSSI=-106 482191 !RFM69:SWR:NACK 482193 RFM69:SWR:SEND,TO=0,SEQ=82,RETRY=3 482199 RFM69:CSMA:RSSI=-105 482406 !RFM69:SWR:NACK 482408 RFM69:SWR:SEND,TO=0,SEQ=82,RETRY=4 482414 RFM69:CSMA:RSSI=-108 482621 !RFM69:SWR:NACK 482623 !TSF:MSG:SEND,1-1-0-0,s=1,c=1,t=16,pt=2,l=2,sg=0,ft=0,st=NACK:1 Loop 484630 RFM69:SWR:SEND,TO=0,SEQ=82,RETRY=0 484636 RFM69:CSMA:RSSI=-109 484841 !RFM69:SWR:NACK 484843 RFM69:SWR:SEND,TO=0,SEQ=83,RETRY=1 484849 RFM69:CSMA:RSSI=-107 485056 !RFM69:SWR:NACK 485058 RFM69:SWR:SEND,TO=0,SEQ=83,RETRY=2 485064 RFM69:CSMA:RSSI=-108 485271 !RFM69:SWR:NACK 485273 RFM69:SWR:SEND,TO=0,SEQ=83,RETRY=3 485279 RFM69:CSMA:RSSI=-105 485486 !RFM69:SWR:NACK 485488 RFM69:SWR:SEND,TO=0,SEQ=83,RETRY=4 485494 RFM69:CSMA:RSSI=-107 485662 RFM69:SWR:ACK,FROM=0,SEQ=83,RSSI=-88 485666 RFM69:ATC:ADJ TXL,cR=-88,tR=-78..-82,TXL=12 485672 RFM69:PTX:LEVEL=13 dBm 485675 TSF:MSG:SEND,1-1-0-0,s=1,c=1,t=16,pt=2,l=2,sg=0,ft=1,st=OK:1And my Sketch :
// Enable debug prints to serial monitor #define MY_DEBUG // Enable and select radio type attached #define MY_RADIO_RFM69 #define MY_IS_RFM69HW #define MY_DEBUG_VERBOSE #define MY_DEBUG_VERBOSE_RFM69 //#define MY_DEBUG_VERBOSE_RFM69_REGISTERS #define MY_RFM69_NEW_DRIVER //#define MY_RFM69_ATC_MODE_DISABLED //#define MY_RFM69_TX_POWER_DBM 20 // Enabled repeater feature for this node //#define MY_REPEATER_FEATURE //#define MY_NODE_ID 5 #include <MySensors.h> #define OPEN 1 // Initialize motion message MyMessage msg(1, V_TRIPPED); uint8_t value = OPEN; void setup() { Serial.begin(115200); pinMode(LED_BUILTIN, OUTPUT); } void presentation() { Serial.println("Presentation"); // Send the sketch version information to the gateway and Controller sendSketchInfo("RFM69 Sensor ", "1.0"); // Register all sensors to gw (they will be created as child devices) present(0, S_CUSTOM); present(1, S_DOOR); } void loop() { Serial.println("Loop"); digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second //sendHeartbeat(); send(msg.set(OPEN)); } -
Are you sure about ask your hardware versions? I bought rfm69 modules and I thought they were the HW version but they turned out to be the normal ones.
So important is- module version
- frequency
It looks like even with a high rssi your reception is not good. But maybe I interpret this the wrong way. Can I've of the developers or more experienced help with the analysis?
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Thank you @electrik
My intent is to use RFM69HW 868Mhz
I compared with photos on the internet like heremine is:

as far as i understand my reading my RSSI values seem to tell my signal is very weak and noisy ?
I tried to provide the pwr to the rfm69 with an external source instead of the esp8266 but i was not better. -
Thank you @electrik
My intent is to use RFM69HW 868Mhz
I compared with photos on the internet like heremine is:

as far as i understand my reading my RSSI values seem to tell my signal is very weak and noisy ?
I tried to provide the pwr to the rfm69 with an external source instead of the esp8266 but i was not better.@hlehoux Hi!
I had quite alot of trouble with NRF24 modules with shaky connections despite doing everything that has been discussed in forum with power supply etc and have ordered a bunch of RFM69's to hopefully improve this according to others in forum claiming better stability with RFM''s. Haven't tested yet but reading this is a bit dissapointing.
One thing though. Readings in log shows very high RSSI values and if it is measured in dBm this is very bad. The lower value the better I believe. Antenna issue ? -
Thank you @electrik
My intent is to use RFM69HW 868Mhz
I compared with photos on the internet like heremine is:

as far as i understand my reading my RSSI values seem to tell my signal is very weak and noisy ?
I tried to provide the pwr to the rfm69 with an external source instead of the esp8266 but i was not better.@hlehoux can you take a photo from the back also? There should be a table telling which one it is exactly.
@hakha4 said in Help needed to setup a RFM69 & ESP8266 Gateaway on Adafruit Feather Huzzah:
Antenna issue ?
You could be right.
What antenna do you have?
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Hello, here are 2 photos
one from the back:

I'm not sure what the "W" means, i read chinese copy don't have it ?
one from the antenna:

It should be the good size for 868 MHzI don't use "ground plane" or sort of, would this explain so bad RSSI ?
Thank you again for your help and patience
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@hlehoux Hi!
I had quite alot of trouble with NRF24 modules with shaky connections despite doing everything that has been discussed in forum with power supply etc and have ordered a bunch of RFM69's to hopefully improve this according to others in forum claiming better stability with RFM''s. Haven't tested yet but reading this is a bit dissapointing.
One thing though. Readings in log shows very high RSSI values and if it is measured in dBm this is very bad. The lower value the better I believe. Antenna issue ?@hakha4 i also have several NRF24 nodes and gateaway
After trying several antenna/tranceiver, i recommend using
"E01-ML01DP5 Long Range SPI nRF24L01P 2.4Ghz 100mW SMA Antenna IoT Wireless Transceiver Transmitter Receiver nRF24L01P RF Module"as a repeater
It gives far better range resultsAnyway i wanted to try RFM69 to avoid having many repeaters
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Hello, here are 2 photos
one from the back:

I'm not sure what the "W" means, i read chinese copy don't have it ?
one from the antenna:

It should be the good size for 868 MHzI don't use "ground plane" or sort of, would this explain so bad RSSI ?
Thank you again for your help and patience
@hlehoux Hi!
I'm not sure what the "W" means, i read chinese copy don't have it ?W means the low power output variant (+13dBm). There is another version named 'HW' which give a higher transmission output (+20 dBM). As elektik pointed out, check out the solder of the antenna. Did the antenna come presoldered or you did it yourself?
Another option for the coiled antenna is a straight copper wire (8,6 cm long) that gives better transmission according to many sources. Google! theres's alot information about this -
@hlehoux Hi!
I'm not sure what the "W" means, i read chinese copy don't have it ?W means the low power output variant (+13dBm). There is another version named 'HW' which give a higher transmission output (+20 dBM). As elektik pointed out, check out the solder of the antenna. Did the antenna come presoldered or you did it yourself?
Another option for the coiled antenna is a straight copper wire (8,6 cm long) that gives better transmission according to many sources. Google! theres's alot information about this@hakha4 said in Help needed to setup a RFM69 & ESP8266 Gateaway on Adafruit Feather Huzzah:
There is another version named 'HW' which give a higher transmission output (+20 dBM).
There is a black spot on the PCB after "69H" and after the "W" so this is the RFM69HW
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Hello, here are 2 photos
one from the back:

I'm not sure what the "W" means, i read chinese copy don't have it ?
one from the antenna:

It should be the good size for 868 MHzI don't use "ground plane" or sort of, would this explain so bad RSSI ?
Thank you again for your help and patience
@hlehoux
unfortunately, lot of devboards have non-optimized gnd plane for RF, especially for subghz (small or splitted gnd plane by routes..).
Moreover, devboard+dupont cable+external rf module is not ideal.
With rfm69, you should get a nice range.
Though, why on one of your picture, antenna seems shorted to gnd??
Imho I would have chosen something else than esp8266 (esp32??) in your case, but your choice :)To check if this is related to your gnd plane and your build is ok, you could also try to hook two straight wires as a dipole antenna to your radio (one to ANA, the other to GND in opposite direction will replace a ground plane). Google for examples, it's simple to try
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@hlehoux
unfortunately, lot of devboards have non-optimized gnd plane for RF, especially for subghz (small or splitted gnd plane by routes..).
Moreover, devboard+dupont cable+external rf module is not ideal.
With rfm69, you should get a nice range.
Though, why on one of your picture, antenna seems shorted to gnd??
Imho I would have chosen something else than esp8266 (esp32??) in your case, but your choice :)To check if this is related to your gnd plane and your build is ok, you could also try to hook two straight wires as a dipole antenna to your radio (one to ANA, the other to GND in opposite direction will replace a ground plane). Google for examples, it's simple to try
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The modules correspond to what it should be.
It looks like your ground is connected to the ANT pin on the picture, on the bottom side of the PCB? -
@hlehoux
unfortunately, lot of devboards have non-optimized gnd plane for RF, especially for subghz (small or splitted gnd plane by routes..).
Moreover, devboard+dupont cable+external rf module is not ideal.
With rfm69, you should get a nice range.
Though, why on one of your picture, antenna seems shorted to gnd??
Imho I would have chosen something else than esp8266 (esp32??) in your case, but your choice :)To check if this is related to your gnd plane and your build is ok, you could also try to hook two straight wires as a dipole antenna to your radio (one to ANA, the other to GND in opposite direction will replace a ground plane). Google for examples, it's simple to try
@scalz Thank you very much!
Unfortunatly, the antenna seems shorted to ground only because this is the "head" of the pliers i used to take the photo.i use esp8266 because i received for free a lot of many adafruit huzzah feathers :-)
i will try your suggestion to hook two straight wires as a dipole antenna and report if this is better.
For sure my "development" setup is devboard+dupont cable+external rf and this should not be the final version ; anyway loosing 50% of messages with distance of 1 meter is disappointing.
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@scalz Thank you very much!
Unfortunatly, the antenna seems shorted to ground only because this is the "head" of the pliers i used to take the photo.i use esp8266 because i received for free a lot of many adafruit huzzah feathers :-)
i will try your suggestion to hook two straight wires as a dipole antenna and report if this is better.
For sure my "development" setup is devboard+dupont cable+external rf and this should not be the final version ; anyway loosing 50% of messages with distance of 1 meter is disappointing.
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try adding :
#define MY_RFM69_FREQUENCY RFM69_868MHZjust in case....
My first prototype using dupont cables and piece of wire as antenna gave me 500m range with 3 or 4 houses between me and gateway.
Try old driver, no RSSI reporting, but my whole network runs on old driver.@hlehoux 1m range is usually caused by radio type misconfiguration, like running HW radio as low power or other way round. Another possibility is faulty radio.
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Strangely, i also have another bunch of RFM69s that are marked as H but not W. What does it mean ?